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Vocab to know the Vocab
Geometry Basics: Angles
Geometry Basics: Lines
PLT: Part 1
PLT: Part 2
100
When two things (lines, line segments, angles, etc) are equal to one another.
What is congruent?
100
Two rays that come together at a common end point.
What is an angle?
100
Something that goes on forever in both directions.
What is a line?
100
Non-adjacent angles that are formed by intersecting lines.
What are vertical angles?
100
Angles on the same side of the transversal and inside the parallel lines.
What are same side interior angles?
200
When two angles add up to 180.
What is supplementary?
200
An angle that measures between 0 and 90 degrees.
What is an acute angle?
200
A part of a line that starts at a point and goes on forever in one direction.
What is a line segment?
200
Angles that are on the same side of the transversal and in the same position on the parallel lines.
What are corresponding angles?
200
Corresponding Angles
Angles on the same side of the transversal and in the same position on the parallel line.
300
When two angles are inside the parallel lines.
What is interior?
300
Two lines that intersect and form a right angle.
What are perpendicular lines.
300
A point on a line segment that forms two congruent pieces.
What is a midpoint?
300
Angles that are inside the parallel lines and on opposite/diagonal sides of the transversal.
What are alternate interior lines?
300
Alternate Exterior Angles
Angles opposite/diagonal on the transversal and outside the parallel lines.
400
When two or more angles are outside the parallel lines.
What is exterior?
400
Two or more angles that add up to 180.
What are supplementary angles?
400
A piece of a line that has two end points.
What is a line segment?
400
Same Side Exterior Angles
Supplementary angles that are on the same side of the transversal and outside the parallel lines.
400
Name all the congruent angle pairs.
What are vertical angles, alternate interior angles, alternate exterior angles, and corresponding angles?
500
One line that intersects two or more lines.
What is a transversal?
500
A ray or line that intersects an angle and forms two congruent parts.
What is an angle bisector?
500
Lines that have the same slope and never intersect?
What are parallel lines?
500
Adjacent angles that add up to 180 degrees.
What are linear pairs?
500
Name all the supplementary angle pairs.
What are linear pairs, same side exterior angles, same side interior angles?