What is a reflex angle ?

How to find a reflex of a given angle?

Eg reflex of 110°.

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Solution

Reflex angles are angles measuring greater than 180 degrees and less than 360 degrees. The measure of a reflex angle is added to an acute or obtuse angle to make a full 360 degree circle.

Reflex angles are always associated with another angle that is < 180 degrees. If you measure that smaller angle with a protractor and then subtract the result from 360, you get the size of the reflex angle.

reflex angle of 110 degree = 360 - 110 = 250 degree

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Reflex angle of 90^o is:

∠ A O B = ∠ B O C = ∠ C O D = 38^{\circ}

∠ A O C

∠ A O D

∠ A P C

A straight angle is ___ a reflex angle.

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