Isosceles Triangle Calculations
Unknown Grade•45 minutes
Learning Objective
I can calculate missing angles or side lengths in isosceles triangles.
Practice Questions
This lesson includes 7 practice questions to reinforce learning.
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1. Define an isosceles triangle in your own words, mentioning its key properties related to sides and angles.
2. In an isosceles triangle, one of the base angles measures 65°. What is the measure of the other base angle? Explain your reasoning.
3. An isosceles triangle has a vertex angle (the angle between the two equal sides) of 30°. Calculate the measure of each base angle. Show your working.
...and 4 more questions
Educational Video
Angles in Isosceles Triangle
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