GRE Math : How to find an angle in a right triangle

Study concepts, example questions & explanations for GRE Math

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Example Questions

Example Question #95 : Geometry

A triangle has three internal angles of 75, 60, and x. What is x? 

Possible Answers:

45

60

110

90

75

Correct answer:

45

Explanation:

The internal angles of a triangle must add up to 180. 180 - 75 -60= 45. 

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