All ISEE Upper Level Math Resources
Example Questions
Example Question #661 : Grade 7
One of the base angles of an isosceles triangle is . Give the measure of the vertex angle.
Possible Answers:
Correct answer:
Explanation:
The base angles of an isosceles triangle are always equal. Therefore both base angles are .
Let the measure of the third angle. Since the sum of the angles of a triangle is , we can solve accordingly:
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