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2 votes
A.obtuse
B.straight
C.acute
D.right

A.obtuse B.straight C.acute D.right-example-1

1 Answer

5 votes

A. obtuse. The angle R is obtuse.

An obtuse angle is an angle greater than 90° and less than 180°. So, in the image attached we can see that the angle R is greater than 90° and less than 180°.

User Denis Kildishev
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