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**Math Polygons Triangles**

**Math Polygons Triangles**

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Aim: What are **polygons**? How do we classify **triangles**? Do Now: C B A D P 2) Which of the following shapes are **polygons**? c) b) a) e) f) d) Def: **Polygons** **Triangles**: “Included” Sides and Angles of **Triangles** “Opposite” Sides and Angles of **Triangles** Classifying **Triangles** by Sides: Isosceles ...

Areas of Regular **Polygons** ... Use what you know about 30-60-90 **triangles**, 45-45-90 **triangles**, and even trig to solve the problem. ... **Math** Dept Last modified by: kevin Created Date: 2/6/2006 4:11:40 PM Document presentation format:

Geometry Using Trig Functions to Find the Areas of Regular **Polygons** * * * * Goals Determine the central angle of a polygon. Find the area of **polygons** not comprised of 30-60-90 or 45-45-90 **triangles** Use trig functions to find the apothem and the length of a side of a polygon * Finding Internal ...

**Triangles** are **polygons**. We can classify them by their sides. Scalene, equilateral, isosceles. Scalene **triangles** have no sides the same length.

What are congruent **polygons**? How do we prove **triangles** congruent using Side-Angle-Side Postulate? Aim: A Do Now: Given: 2 1 3 4 B Prove: C D Reason Statement

Lesson 3-1 Triangle Fundamentals * Lesson 3-1: Triangle Fundamentals Lesson 3-1: Triangle Fundamentals * Naming **Triangles** For example, we can call the following triangle: **Triangles** are named by using its vertices. ∆ABC ∆BAC ∆CAB ∆CBA ∆BCA ∆ACB A B C Lesson 3-1: Triangle Fundamentals ...

Please work on the pink warm up 5.5 Special **Triangles** & Areas of Regular **Polygons** There are 2 special right **triangles** 45-45-90 30-60-90 In a 45-45-90 triangle, the length of the hypotenuse is √2 times the length of the leg.

Lesson 3-4 **Polygons** **Polygons** Classifications of a Polygon Classifications of a Polygon Polygon Names Convex Polygon Formulas….. Examples….. Lesson 3-4: **Polygons** Lesson 3-4 **Polygons** Classifications of a Polygon Classifications of a Polygon Polygon Names Convex Polygon Formulas…..

Naming & Comparing **Polygons**. List vertices in order, either clockwise or counterclockwise. When comparing 2 **polygons**, begin at corresponding vertices; name the vertices in order and; go in the same direction.

Geometry 1 Unit 4 Congruent **Triangles** Casa Grande Union High School Fall 2008 Geometry 1 Unit 4 4.1 **Triangles** and Angles Classifying **Triangles** Example 1 Name each triangle by its sides and angles A. B. C. Interior angle Angle on the inside of a triangle Exterior angle Angle outside ...

**Polygons** Lesson 13-4 What is a polygon? A polygon is a simple, closed, two-dimensional figure formed by three or more line segments (sides). Closed?

**Polygons** are named by the number of angles (or sides) that make the polygon. A regular polygon has all sides the same length and all angles the same measure.

**Polygons** with 3 sides… **Triangles**. **Polygons** with 4 sides… Quadrilaterals. **Polygons** with 5 sides.. Pentagons. But wait we have more **polygons**. **Polygons** with 6 sides…

**Polygons**, Circles, and Angles Classifying **Polygons** Polygon—closed figure with at least 3 sides Regular polygon—all sides and angles are congruent Classifying **Polygons** cont…

Envision **Math** - 3rd Grade - Topic ... and right angles – and connect these ideasto definition of shapes 3rd Graders identify and classify **polygons**. Envision **Math** ... acute, obtuse, and right angles – and connect these ideasto definition of shapes Students identify and classify **triangles** ...

11.2 Areas of Regular **Polygons** Geometry Mrs. Spitz ... The following formula for equilateral **triangles**; ... °. In right triangle ∆BDC, you can use trig ratios to find the lengths of the legs. One side Reminder – rarely in **math** do you not use something you learned in the past chapters.

Reflection: The Geometry in Real Life PowerPoint relates **math** to the real word. . ... **Polygons** with more than 4 sides (pentagons, hexagons, etc.) A symmetric polygon. ... Can you find one or more Obtuse **Triangles**?

http://www.**math**.com/school/subject3/lessons/S3U2L3GL.html **Math** League http://www.mathleague.com/help/geometry/**polygons**.htm Identify the **Triangles** **Triangles** are ... 16 Slide 17 Quadrilateral **Math** League Identify the **Triangles** Right Triangle Slide 22 Obtuse Triangle Slide 24 ...

a x x b Lesson 8.3 Similar **Polygons** Two **polygons** are similar if all corresponding angles are congruent and corresponding sides are proportional. Scale Factor The scale factor is the ratio of the lengths of two corresponding sides. The **triangles** are similar. Find x and y. 5. A triangular ...

Fun with Angles and **Polygons** A unit for learning about geometry Ms. Collette Robitaille Introduction to Geometry Unit 1: Angles (2 days) Unit 2: **Triangles** (2 days) Unit 3: Quadrilaterals (2 days) Geometry Webquest (5 days) Review Activities (3 days) Test (1 day) *This is a 3 week unit of ...

11.2 Areas of Regular **Polygons** Geometry Mrs. Spitz ... The following formula for equilateral **triangles**; however, ... In right triangle ∆BDC, you can use trig ratios to find the lengths of the legs. Which one? Reminder – rarely in **math** do you not use something you learned in the past chapters.

4.1 – Congruent **Polygons** Congruent **Polygons** If two **polygons** are congruent then all the corresponding sides and angles are congruent Are they congruent?

Lesson 2 Ex1 Similar **Polygons** Answer: None of the corresponding angles are congruent, so the **triangles** are not similar. Since both **triangles** are isosceles, the base angles in each triangle are congruent. In the first triangle, ...

6.1 **Polygons** Geometry Mrs. Spitz Spring 2005 Objectives: Identify, name, and describe **polygons** such as the building shapes in Example 2. Use the sum of the measures of the interior angles of a quadrilateral.

Areas of Regular **Polygons** Geometry Finding the area of an equilateral triangle The area of any triangle with base length b and height h is given by A = ½bh.

Congruence of Line Segments, Angles, and **Triangles** Eleanor Roosevelt High School Geometry Mr. Chin-Sung Lin L6_Congruent Angle Pairs * L6_Congruent Angle Pairs * L6_Congruent Angle Pairs * L6_Congruent Angle Pairs * Chapter 1 - Essential of Geometry * Chapter 1 - Essential of Geometry ...

11.1 Angle Measures in **Polygons** Geometry Mrs. Spitz Spring 2005 Objectives/Assignment Find the measures of interior and exterior angles of **polygons**.

3.6 – Angles in **Polygons** Sum of the Interior Angles We can find the sum of all the angles inside a CONVEX polygon using 2 main methods. The polygon MUST be convex.

18.2 **Polygons** A polygon is a flat closed figure described by straight-line segments and angles. **Polygons** are named by the number of sides they contain and other relations.

6th Grade AZ **Math** ... To solve the mystery of the missing coordinates you need to know the properties of some important **polygons** Clues that a polygon is a ... Locate the missing coordinates in this parallelogram Think of the parallelogram as a rectangle and 2 **triangles** The **triangles** ...

... a circle with radius AB can be drawn Any two right angles are congruent Hyperbolic **Triangles** Recall ... The difference between the calculated sum and 180 is called the defect of the triangle Calculate the defect Hyperbolic **Polygons** What does the hyperbolic plane do to the sum of the ...

Handout 8.1 Handout 8.2 8.3 Similar **Polygons** Day 2 Part 1 CA Standard 11.0 Warmup ... not similar, or cannot be determined. Slide 47 8.5 Proving **Triangles** are Similar Warmup Side-Side-Side (SSS) Similarity Theorem Exercise Which **triangles** are similar to ΔABC? Explain. Solve for h.

by Your Class Hosted by Your Class 100 100 200 200 400 400 300 400 **Triangles** Quadrilaterals Angles Lines 300 300 300 200 400 200 100 500 500 500 500 100 Row 1, Col 1 What is a scalene triangle ?

Used in **Math** Class The Meaning of Place ... 16 Even numbers can not be prime 1 is not prime **Polygons** **Triangles** Equilateral Isosceles Scalene Right Obtuse Acute Pentagon Octagon Hexagon Quadrilaterals Trapezoid Parallelograms Rectangle Rhombus Square Name an ordered pair x ...

Lesson 2 ~ Angles • **Polygons** ~ **Triangles** • Quadrilaterals Example 2.1 Lesson 2.A Lesson 2.B Lesson 2.C Lesson 2.D Example 2.2 Example 2.3 Are there any questions?

4.1 Apply Congruence and **Triangles** 4.2 Prove **Triangles** Congruent by SSS, SAS Objectives: To define congruent **triangles** To write a congruent statement

... Chin-Sung Lin **Polygons** ERHS **Math** Geometry Mr. Chin-Sung Lin A polygon is a closed figure in a plane that is the union of line segments such that the segments intersect only at their endpoints and no segments sharing a common endpoint are collinear **Triangles** ERHS **Math** Geometry Mr. Chin ...

**Polygons**, Circles, and Solids. Common **Polygons**. **Triangles**. Slide 1- Quadrilaterals. Slide 1- Sum of Interior angles of Regular Polygon. Interior sum of angles of regular polygon is (n-2)180, n is the number of sides.

Similar **Polygons**. If two **polygons** are similar, their corresponding angles are congruent and the lengths of corresponding sides are in proportion.

They construct a classroom **math** journal/dictionary, ... Identify **polygons** based on the number of sides Partition **polygons** into quadrilateral and **triangles** Extend partitioning to three-dimensional shapes Draw and model two and three-dimensional shapes using software, ...

What is a Polygon? Dr. Beth McCulloch Vinson Athens State University PT3 Grant Funding, Summer 2000 What do we need to know about **polygons**? How many sides does each polygon have?

8.4 Similar **Triangles** Geometry Mrs. Spitz Spring 2005 Objectives/Assignment Identify similar **triangles**. ... Identifying Similar **Triangles** In this lesson, you will continue the study of similar **polygons** by looking at the properties of similar **triangles**.

6.7 Areas of **Triangles** and Quadrilaterals Geometry Mrs. Spitz Spring 2005 Objectives: Find the areas of squares, rectangles, parallelograms and **triangles**.

Use measures of angles of **polygons** to solve problems Find the measures of interior and exterior angles of **polygons** Chapter 11 Areas of **Polygons** and Circles

Section 9.3 ~ Classifying **Polygons** Pages 470 - 474 A polygon is a closed plane figure with at least three sides. The sides meet only at their endpoints.

... partners to explain a concept in their own words and teacher makes correction Have students practice reading in their **math** textbooks English language learners may be unfamiliar ... Definition of a regular polygon Recognizing characteristics of regular **polygons** Special Right **Triangles** ...

A C B D Theorems for parallelograms : 1. A diagonal divides a parallelogram into two congruent **triangles**. **Polygons** – Parallelograms A Parallelogram is a four – sided figure where opposite sides are parallel. A C B D Theorems for parallelograms : 1.

2.5 Convex **Polygons** Polygon ... of a Triangle Slide 29 2.5 Convex **Polygons** 2.5 Convex **Polygons** 2.5 Convex **Polygons** 2.5 Convex **Polygons** 2.5 Convex **Polygons** 3.1 Congruent **Triangles** 3.1 Congruent **Triangles** 3.1 Congruent **Triangles** 3.1 Congruent **Triangles** 3.1 Congruent **Triangles** 3.1 ...

Regular **polygons**- all of the sides are the same length and all of the angles have the same measure. A tessellation consisting of regular **polygons** is called a ... Congruent **Triangles** are….. Open up **Math** Journal pg. 77 Two ways to classify or to name **Triangles** The MAGIC Number for ...

9.1 **Math** 90 Perimeter Perimeter is the measure of the distance around a polygon. Definition: a closed figure that consists of line segments (eg. **triangles** and quadrilaterals are **polygons**).