Angle Pairs

Complementary Angles (sum to 90)

Find x:

Complementary Angles

Find x:

Supplementary Angles (sum to 180)

Which of the following could be the measurements of two supplementary angles?

Supplementary Angles

Which of the following could be the measurements of two supplementary angles?

Vertical Angles (equal measure)

Lines a and b intersect.  The measure of ∠1 is 65^o.  What is the measure of ∠2 ?

Vertical Angles

Lines a and b intersect.  The measure of ∠3 is 115^o.  What is the measure of ∠4 ?