3 years ago

find the measure of the vertex anlge of an isosceles triangle if the measure of one base angle is 36°

1 answer:

5 0

Because it is an isosceles triangle, the two base angles have to be the same, so
36°+36°=72°
angles in all triangles add up to 180°, so
180°-72°=108°
unknown=108°

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