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Geometric Figures

Vocabulary for Geometric Figures Unit Grade 7

TermDefinition
Acute Angle An angle that measures less than 90 degrees, but greater that 0 degrees.
Adjacent Angles Two angles created by intersecting lines and share a common ray.
Angle Two rays that meet at a common point.
Complementary Angles A pair of angles whose sum is 90 degrees.
Congruent Angles Two angles that have equal degree measure.
Corresponding Angles Angles that are in the same positions of different intersections created by a transversal intersecting two or more parallel lines.
Equilateral Triangle A triangle that has all sides of equal length.
Intersecting Lines Two lines that meet at a point.
Isosceles Triangle A triangle that has at least two sides of equal measure.
Line A one dimensional figure that does on forever in two directions.
Line Segment A one dimensional figure with two endpoints.
Acute Triangle A triangle that has three acute angles.
Obtuse Angle An angle that measures greater than 90 degrees, but less than 180 degrees.
Obtuse Triangle A triangle that has one obtuse angle.
Parallel Lines Two lines that in the same plane that will never intersect.
Perpendicular Lines Two lines that intersect forming four right angles.
Plane A two dimensional (flat) surface that extends forever.
Point An exact location in space.
Ray A one dimensional figure that has one endpoint and goes on forever in one direction.
Right Angle An angle that measures exactly 90 degrees.
Right Triangle A triangle that has one 90 degree angle.
Scalene Triangle A triangle that has no sides of equal length.
Straight Angle An angle that measures exactly 180 degrees.
Supplementary Angles A pair of angles whose sum is 180 degrees.
Transversal A line that cuts through two or more parallel lines.
Vertical Angles Two angles created by intersecting lines that are equal in measure, but do not share a common ray.
Created by: EYLERB106