Calculate 71764

The angle at the base of an isosceles triangle is 18 ° larger than the angle at the central vertex. Calculate the size of the interior angles.

Correct answer:

A =  66 °
B =  66 °
C =  48 °

Step-by-step explanation:

A=B A=18+C A+B+C=180  AB=0 AC=18 A+B+C=180  A=66=66 B=66 C=48

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