Base angles theorem

This is an isosceles triangle, BC = DC. 1. Measure the three angles in the triangle 2. What do you notice about the angles? 3. Finish this conjecture (sentence) "If two sides of a triangle are congruent, then ___"

 

Lorelei Peterson

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Resource Type
Activity
Tags
angle  base  theorem 
Target Group (Age)
14 – 18
Language
English
 
 
GeoGebra version
4.4
Views
86
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