3 years ago

What is the value of x?

Mathematics

1 answer:

Ira Lisetskai [31]3 years ago

5 0

Answer:

121°

Step-by-step explanation:

The angle with measure x is an exterior angle of the triangle.

The angles measuring 90° and 31° are the remote interior angles to the exterior angle.

Theorem:

In a triangle, the measure of an exterior angle equals the sum of the measures of its remote interior angles.

x = 31 + 90

x = 121°

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