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Geometry vocabulary
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Gravity
Terms in this set (19)
Plane
A flat surface that has no boundaries
Point
A specific location in space represented by a dot
Line
Extends in two directions and has no ends
Line segment
The area between two points, including those two points
Intersecting lines
Lines that cross each other
Perpendicular lines
Lines that cross one form right angles
Ray
Extends in one direction from an endpoint, never ends
Angle
Two rays that come together at an endpoint
Vertex
The endpoint where two rays come together
Right angle
An angle that is exactly 90 degrees
Acute Angle
An angle that is less than 90 degrees
Obtuse Angle
An angle that is larger than 90 degrees
Adjacent Angles
Two angles that share a common side and have the same vertex (endpoint)
Complementary Angles
Two angles whose sum is 90 degrees
Supplementary Angles
Two angles whose sum is 180 degrees
Vertical Angles
Angles formed when 2 lines intersect [Vertical angles (opposite each other) have the same measure]
Congruent Angles
Angles that have the same measure
Bisector of an angle
A ray that divides an angle into two congruent angles
Transversal
A line that crosses 2 parallel lines (the angles formed are called corresponding angles and alternate interior angles)
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