Question

the base of an isoscles triangle is 12degree more than its vertex.find the measure of all the angles​

Answer 1

The base angles of an equilateral triangle are equal and the vertex angle lies between the 2 base angles.

Given to us is

base angle = 12 degrees

so by angle sum property

base angle + base angle + vertex angle = 180

2 base angles + vertex angle = 180

vertex angle = 180 - 2(12) = 180 - 24

vertex angle = 156 degrees

ALL ANGLES WOULD BE -  

156, 12 AND 12

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