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What's the measure of QPR? ​
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What's the measure of QPR? ​

What's the measure of QPR? ​-example-1
User Matt Delves
by
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1 Answer

4 votes

Answer:

∠ QPR = 90°

Explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

120° is an exterior angle of the triangle , then

∠ QPR + ∠ PQR = 120° , that is

∠ QPR + 30° = 120° ( subtract 30° from both sides )

∠ QPR = 90°

User Kadeem
by
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