Lessons

1. Basics
2. Deductive Reasoning
3 - Parallel lines
4 - Congruent Triangles
5 - Quadrilaterals
6 - Inequalities
7 - Similar Polygon
8 - Rt. Triangles
9 - Circles
10 - Constructions
11 - Areas of 2D objects
12 - Areas and Volumes
13 - Coordinates

Similar Polygons

 

Objective:

            Learning about and applying the properties of similar polygons

 

Lesson 7-2 Similar Polygons

            Similar Polygons: Two polygons containing vertices that can be paired so that the corresponding angles are congruent and the corresponding sides are in proportion.

            Scale factor: The ratio of the lengths of two corresponding sides of similar polygons

   / A is congruent to / E

   / B is congruent to / F

   / C is congruent to / G

   / D is congruent to / H

AB/EF = BC/FG= CD/GH = AD/EH

The scale factor of polygon ABCD to polygon EFGH is 10/20 or 1/2

 

 

 

Quickie Math Copyright (c) 2000 Team C006354