Complementary, Supplementary, Vertical, and Adjacent Angles - BW

vertical angles

A pair of "opposite" angles that form when two lines intersect.

Supplementary angles

A pair of angles that add up to 180 degrees.

Complementary angles

A pair of angles that add up to 90 degrees.

The angles MUST add up to 180

A straight line means:

Straight angle

An angle that is 180 degrees

Right angle

An angle that is 90 degrees

Vertical angles are ALWAYS

Congruent

65⁰

Find the complementary angle of an angle with measure 25⁰.

61⁰

Find the complementary angle of an angle with measure of 29⁰.

81⁰

Find the supplementary angle of the given angle whose measure is 99⁰.

37.5

If A is 37.5 degrees, what is b?

Congruent

Same size, same shape. Equal in measure.

12

Solve for x.

30

Solve for x.

62

What is the measure of angle b?

Adjacent Angles

two angles that share a side; two angles that are 'beside' each other.