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A triangle is formed by intersecting lines.

What is the measure of angle x?

A triangle is formed by intersecting lines. What is the measure of angle x?-example-1
User Nurieta
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2 Answers

6 votes
the measure of angle x would be 39°
triangles only go up to 180° and that triangle already has a 90° right angle and a 51° acute angle. so the answer is 39°
User El Ronnoco
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The sum of all angles of a triangle = 180.
So 180-90 (right angle) - 51 (other known angle) = 39
User Pedro Casado
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