Vocabulary
Any line that intersects two or more coplanar lines.
What is a transversal
Two straight lines that never cross are called ______________
Parallel
If angle 1 measures 100 degrees then angle 2 = ?
80 degrees
Two angles whose measures add up to 180 degrees
What are supplementary angles
Two angles whose measures add up to 90o
What are Complementary Angles.
If angle 1 is equal to 100 degrees what is the measure of angle 8?
100 degrees
Angle 2 and Angle 6 are __________________
Corresponding Angles.
Angle 1 and Angle 8 are ___________
alternate exterior angles
If angle 4 is 100 degrees what is angle 5?
100 degrees
Angle 5 and Angle 8 are _______________
What are Vertical Angles.
When two angles have the same measurement we say they are ______________
congruent
If angle 3 is 60 degrees what is the measure of angle 5?
120 degrees
If angle 3 is equal to 3x and angle 4 is equal to 6x then x must equal ?
20 degrees
Angle 4 and angle 5 are
What are Alternate Interior Angles.
Yes, angle 1 and angle 2 are supplementary. What other vocab word from this unit could we use to describe angle 1 and angle 2
adjacent
Angle 5 and angle 2 sum (add up) to ?
180 degrees
If angle 7 is equal to 5x and angle 2 is equal to 3x+20 then x=?
x=10 degrees