Question

The vertex angle in an isosceles triangle measure 80°. What are the measures of the other two angles?

Answer 1

A) both are 50 degrees
b) 50 degrees

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Answer 2

1) (180-80)/2 = 50°

Angles in a triangle add up to 180°
Two other angles are equal as isosceles therefore 100/2

2) 180-(65x2) = 50°

Angles in a triangle add up to 180°
2 base are equal therefore both 65°
180 - 65x2 = 50