angle a and angle b are congruent and supplementary. prove that angle a and angle b are right angles.

If supplementary angles are congruent, each of them is a _____ angle. => Obtuse or Straight or Right or Reflex..

Two angles are said to be supplementary, if the sum of their measures is 180 o..

Two angles are said to be supplementary, if the sum of their measures is 180 o..

They are a pair of angles, the sum of whose measures is equal to 180 o . These may be adjacent angles as well. [See figure below] [See figure below] (non-adjacent angles..

If the sum of the two angles is one right angle (i.e., 90 o ), they are called complementary angles..

Which of the figures have congruent angles? => Figure (a) and Figure (d) or Figure (a) and Figure (b) or Figure (b) and Figure (c) or Figure (c) and Figure (d)..

Two angles are supplementary and one angle is obtuse. The other angle must be ______________. => obtuse or right angle or straight angle or acute..

Reflex Angle : An angle whose measure is more than 180 o and less than 360 o is called a reflex angle..

When two straight lines meet at a point they form an angle..

When two straight lines meet at a common point, they form an angle. and are called arms of the angle BAC. The point 'A' is called the vertex. The angle formed by the two rays AB and AC is denoted by the symbol BAC. If there is only one angle at A, the..