Question

if the sum of the measures of two angles is 90 they are known as supplementary angle​

Answer 1

False

The given statement is false. If the measures of 2 angles is 90, then they are complementary angles.

Supplementary angles are those angles whose measure is 180 degrees and form a linear pair.

☑ If the 2 angles of complementary angles are equal then they measure 45 degrees each.

☑ If the 2 angles of supplementary angles are equal then they measure 180 degrees each.

Answer 2

The statement is false. If the sum of the measures of two angles is 90 they are known as complementary angles.

Step-by-step explanation:

• Addition of angles are classified in complementary and supplementary angles.

Complementary angles:

• When the sum of two angles is 90°, then the angles are known as complementary angles.

• If two angles add up to form a right angle, then they are referred to as complementary angles. These two angles are said to complement each other.

• Both the angles in complementary pair has to be acute angles i.e. less than $90^{o}$.

• If x and y are complementary angles, then $x+y=90^{o}$

• Example: $30^{o}$ and $60^{o}$ are complementary angles.

Supplementary angles:

• When the sum of two angles is 180°, then the angles are known as supplementary angles.

• If two angles add up, to form a straight angle, then those angles are referred to as supplementary angles.

• These are also called straight line angles.

• If x and y are supplementary angles, then $x+y=180^{o}$

• Example: $110^{o}$ and $70^{o}$ are supplementary angles.