All Kinds of Lines
Angles Galore
Pair Them Up!
Parallels & Transversal
Other
100
A line going side-to-side, like the horizon.
What is a horizontal line?
100
An angle that is exactly 90 degrees
What is a right angle?
100
Two angles, that when combined, have a sum of 90 degrees.
What are complementary angles?
100
Angles 3, 4, 5, and 6
What are interior angles?
100
The point of intersection of an angle
What is a vertex?
200
A line that goes straight up and down.
What is a vertical line?
200
An angle that is less than 90 degrees
What is an acute angle?
200
Two angles, that when combined, have a sum of 180 degrees
What are supplementary angles?
200
Angles 6, 5, 1, and 2
What are exterior angles?
200
A unit to measure angles
What is a degree?
300
A part of a line with a start point but no end point (it goes to infinity)
What is a ray?
300
An angle that is exactly 180 degrees
What is a straight angle?
300
Two angles that share a common ray and common vertex
What are adjacent angles?
300
Angle pairs 7 and 3, and 8 and 4
What are alternate interior angles?
300
A tool with which to measure angles
What is a protractor?
400
Lines that are at right angles (90 degrees) to each other.
What are perpendicular lines?
400
An angle that is greater than 90 degrees, but less than 180 degrees.
What is an obtuse angle?
400
Two congruent angles formed by intersecting lines that share a common vertex
What are vertical angles?
400
Angle pairs 1 and 8, and 2 and 7
What are alternate exterior angles?
400
Any angle not a multiple of 90
What is an oblique angle?
500
Lines that never intersect and are always the same distance apart.
What are parallel lines?
500
An angle that measures more than 180 degrees, but less than 360 degrees.
What is a reflex angle?
500
Two angles, that when combined, have a sum of 360 degrees.
What are explementary angles?
500
Angle pairs 2 and 6, 4 and 8, 1 and 5, 3 and 7
What are corresponding angles?
500
An angle that measures 360 degrees
What is a perigon?