Question

A base angle of an isosceles triangle is 45 degrees. Calculate the size of the vertical angle of the triangle.

Answer 1

Answer:

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Step-by-step explanation:

Base angles of an isosceles triangle is 45°.

Let the vertical angle be x.

--> base angles + vertical angle = 180°

--> 45° + 45° + x = 180°

--> 90° + x = 180°

--> x = 180° - 90°

--> x = 90°

Vertical angle = 90°

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