What is the measure of the vertex angle of an isosceles triangle if one of its base angles measures 42°?
1 answer:
Answer:
96 degrees
Step-by-step explanation:
you have two angles that each measure 42 degrees, giving you 84 degrees combined
there are 180 degrees in a triangle, therefore the vertex angle is equal to 180 minus 84, or 96 degrees
check:
42 + 42 + 96 = 180
180 = 180
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