Lines And Angles Flashcards
Line
A straight line that extends in both directions infinitely
Line segment
Two points on a line and every point in between
Congruent line segment
Two line segments that are the same le
Midpoint
A point on a line segment that separates the segment into two congruent line segments.
Length
The distance/measure between two points
Angles
Two lines that intersect create angles, which include a vertex at the intersect. The angle is the space between the lines and is typically measured in degrees
Opposite angles
Angles opposite each other where two lines intersect. Opposite angles have the same measurement and are also called congruent angles
Vertical angles
Vertical angles are angles that are opposite each other.
Congruent angles
Congruent angles are angles that have the same measurement.
Perpendicular lines
Lines that intersect, creating four equal angles.
Right angle
A 90 degree angle.
Acute angle
An angle that measures less than 90 degrees
Obtuse angles
An angle that measures more than 90 degrees.
Parallel lines
Two lines that do not intersect at any point
Endpoints
Two points that denote the end of a line segment.
