Prove that the bisector of a linear pair are at right angles. [Given angle 1= angle 2 & angle 3= angle 4] Prove angle DOC =90°
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we know that linear pair of angle is180 degrees.
angle bisector means it divides the angle into two equal angles.
so,180/2=90 degrees.
that means each angle should be 90 degree. And we know that 90 degree is known as
right angle .hence proved.
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