Reflectional Symmetry

About Geometry Worksheet Activity 3C:     

 

Activity 3C is an introduction to reflectional symmetry in polygons through folding polygons to find axes of symmetry.  

 

Prerequisite Skill: Draw images in reflections of polygons (Assignment 3.7).

 

How to find axes of symmetry in polygons:

 

(Do problem 1 by following the steps below)

 

1.  With scissors, cut out the triangle from the page of polygons.

 

2.  Fold the triangle in half.

 

3.  Open the triangle.  Use a straightedge to draw a line along the fold.  

 

4.  Use a straightedge to draw the same line of reflection on the triangle in problem 1.