Two angles whose measures add up to 180 degrees
Supplementary Angles
Complementary Angles
Two angles whose measures add up to 90
What is the relationship between angles 3 and 8 ?
None
If the measure of angle 4 = 112 degrees, what is the measure of angle 1?
112 degrees
The pair of angles on the outer side of the two parallel lines but on the opposite side of the transversal.
Alternate Exterior Angles
What is the relationship between angles 1 and 2 ?
Linear Pair/Supplementary
If the measure of angle 2 = 50 degrees and the measure of angle 3 = 5x, what is the value of x?
x=10
These angles are located across from each other and have equal measures.
Vertical Angles
Vertical Angles
Each of the pairs of opposite angles made by two intersecting lines.
What is the relationship between angles 7 and 2?
Alternate Exterior Angles
If the measure of angle 2 is 30 degrees , what is the measure of angle 4?
150 degrees
When 2 parallel lines are both intersected by a transversal these angles are inside of the two parallel lines and on opposite sides of the transversal.
Alternate Interior Angles
When 2 parallel lines are both intersected by a transversal, these angles occupy the same location on the top and bottom parallel lines.
What is the relationship between angles 3 and 5 ?
Consecutive Interior Angles
If the measure of angle 1 = 100 degrees and the measure of angle 7 = x + 20, what is the value of x?
x=60