Welcome to the Wonderful World of Polygons.

Slides:

Advertisements

Similar presentations

I can identify corresponding angles and corresponding sides in triangles and prove that triangles are congruent based on CPCTC.

Advertisements

Objective: To be able to work out the interior and exterior angles of a polygon.

Lesson #45 Naming Polygons.

Do Now 1. What is the value of 5 0 ? a. 5 b. 50 c. 0 d Four stores are having a sale on the same computer. Which store is offering the best sale.

Polygons Only one of these is a polygon. Do you know? A polygon MUST be a closed figure.

March Which one of the following is a regular polygon?

What is a Polygon? Dr. Beth McCulloch Vinson Athens State University PT3 Grant Funding, Summer 2000.

Lesson 19 Polygons Kalyani David.

LESSON 15.1 OBJECTIVE : WHEN PRESENTED WITH VARIOUS POLYGON PICTURE CARDS, THE STUDENTS WILL ORALLY SAY WHAT KIND OF POLYGON IT IS BASED ON ITS SIDES AND.

Number of sidesName of polygon 3triangle 4quadrilateral 5pentagon 6hexagon 7heptagon 8octagon 9nonagon 10decagon A polygon is a shape enclosed by straight.

Regular Polygons.  Polygons are a enclosed flat (on the same plane) shape.

Chapter 6 Polygons. Definitions Polygon – many sided figure 3 sided – triangles 4 sided – quadrilaterals 5 sided – pentagons 6 sided – hexagons 7 sided.

Section 11-3 Perimeters and Areas of Similar Figures.

POLYGONS. BUILDING POLYGONS We use line segments to build polygons. A polygon is a closed shape with straight sides.

Polygons Closed figure made up of line segments

Measures of Angles of Polygons.

Identify the polygon by its sides... 1.Pentagon, regular 2.Quadrilateral, regular 3.Pentagon, not regular 4.Quadrilateral, not regular 0 30.

Tessellations *Regular polygon: all sides are the same length (equilateral) and all angles have the same measure (equiangular)

Polygons Polygons Simple, Simple, Closed figure Closed figure Made up of line segments Made up of line segments.

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

Do Now ChalkUp “Quadrilateral Review”. 3/17/ C Polygons.

Polygons Polygons are many-sided closed figures, with sides that are line segments. Polygons are named according to the number of sides and angles they.

By Mr. Dunfee THE SUM OF THE ANGLES OF A TRIANGLE IS 180 DEGREES.

POLYGONS & QUADRILATERALS

11.3 Perimeters and Area of Similar Figures

Polygons Shapes with many sides! Two-dimensional Shapes (2D) These shapes are flat and can only be drawn on paper. They have two dimensions – length.

POLYGONS A polygon is a closed plane figure that has 3 or more sides.

POLYGONS. What is a Polygon? A closed figure made by joining line segments, where each line segment intersects exactly two others Examples of polygons:

The sum of the angles of a triangle is always 180 degrees.

M4G1 Students will define and identify the characteristics of geometric figures through examination and construction. M4G2 Students will understand fundamental.

1-6 Classify Polygons.

ANGLES OF POLYGONS. Polygons  Definition: A polygon is a closed plane figure with 3 or more sides. (show examples)  Diagonal  Segment that connects.

P RACTICE AND R EVIEW. 13 × (40 + 6) 87 − 9 5 × 9 40 × 10.

Polygons Only one of these is a polygon. Do you know? A polygon MUST be a closed figure.

Plane Figures. What are the types of figures? A closed figure begins and ends at the same end point. An open figure has ends that do not meet.

J.Byrne Types of Triangles pg 1  The sum of the angles in any triangle is 180°  Equilateral Triangle  3 sides and 3 angles are equal  Isosceles.

Classifications Bowen’s Class. Quadrilateral Any four sided polygon Any four sided polygon.

Welcome to the Wonderful World of Polygons.

Section Classify Polygons Objective: SWBAT classify polygons

Date: Topic: Similar Polygons (7.4)

Geometry Shapes J.Byrne 2017.

What is a Polygon?.

A Polygon is a simple closed figure formed by three or more straight lines.

Now let’s explore the sum of the 4 angles in any quadrilateral.

Types of Polygons Polygon- a flat closed figure made of straight line segments Circle the figures that are polygons. Cross out the figures  that are.

etryandmeasurement/polygons/

Welcome to the Wonderful World of Polygons.

Polygons Similar and Congruent

180o Scalene Triangle 60o Isosceles Triangle

Polygons – Measurements of Angles

Polygons 3 triangle 8 octagon 4 quadrilateral 9 nonagon pentagon 10

What is a Polygon?.

What is a Polygon? Dr. Beth McCulloch Vinson Athens State University

Angles in Polygons.

What is a Polygon? Dr. Beth McCulloch Vinson Athens State University

Polygons What? Closed figure; 3 or more line segments that do not cross Name a Polygon Count the number of sides 3 - Triangle 4 - Quadrilateral.

How many diagonals in a… 1. Triangle _______ 2. Heptagon _______

11.3 Perimeters and Area of Similar Figures

11.3 Perimeters and Area of Similar Figures

Attributes Straight sides Closed figure 3 or more sides

Names & Properties of 2D Shapes

What is a Polygon? Dr. Beth McCulloch Vinson Athens State University

7.7 Perimeters and Area of Similar Figures

3.3 Day 1 - Interior Angles of Polygons

Types of Polygons Tuesday, 07 May 2019.

Quadrilaterals and other Polygons

What is a Polygon? Dr. Beth McCulloch Vinson Athens State University

11.7 Perimeters and Areas of Similar Figures

Presentation transcript:

Welcome to the Wonderful World of Polygons

What We Hope You Learn by the End of this Presentation: What is a polygon? What are the different types of polygons? What are congruent polygons? What are similar polygons? What are some examples of these polygons?

A polygon is a plane (flat) figure having three or more sides. What Is a Polygon? A polygon is a plane (flat) figure having three or more sides. Types of Polygons: Regular polygons are special. All the sides and angles are congruent. Congruent means the same in size, shape or measure.

Regular Polygons A square is a regular polygon. All the sides and all the angles are congruent.

Regular Polygons This is a regular pentagon. All five sides and all five angles are congruent.

Regular Polygons This is a not a regular pentagon. It has five sides but they are not all congruent.

Let's Play a Polygon Matching Game: Take a minute to match the name up with the figure . . . pentagon triangle octagon quadrilateral hexagon heptagon

What are Congruent Polygons? Congruent polygons are polygons that have the same size and the same shape. fact: Congruent shapes have all their sides and angles congruent. fact:

Let's See Some Congruent Polygons: Notice how the second figures have the same shape and size of the first – they match exactly.

What are SimilarPolygons? Similar polygons are polygons that have the same shape but not the same size. fact: Similar shapes have corresponding parts that are proportional (ex. all corresponding parts are 2 times as large, or ½ as large.) fact:

Let's See Some Similar Polygons: Notice how the second figures have the same shape but the sizes are different. All of the corresponding sides are the same proportion.

Non-Similar Polygons: Notice how the second figures have the same shape but the sizes are different AND all of the corresponding sides ARE NOT the same proportion.

The End!