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Shannon 4.G.1 Vocabulary

Acute Angle An angle with a measure less than 90°
Acute Triangle A triangle with no angle measuring 90º or more
Angle Two rays or line segments that share an endpoint
Classify To sort into categories or to arrange into groups by attributes
Degrees A unit for measuring angles
Line Segment A part of a line with two endpoints
Line of Symmetry A line that divides a figure into two congruent halves that are mirror images of each other
Obtuse Angle An angle with a measure greater than 90º but less than 180º
Obtuse Triangle A triangle that contains 1 angle with a measure greater than 90º (obtuse angle) and 2 acute angles
Parallel Lines Lines that are always the same distance apart and do not intersect
Perpendicular Lines Two intersecting lines that form right angles
Point The exact location in space represented by a dot
Ray A part of a line that has one endpoint and goes on forever in one direction
Right Angle An angle that measures exactly 90º
Right Triangle A triangle that has one 90º angle
Straight Angle An angle that measures exactly 180º
Triangle A polygon with 3 sides and 3 angles
Two-dimensional Figure A plane, flat figure that has length and width
Intersecting Lines Two lines that intersect at a point
Equilateral Having all its sides of the same length.
Scalene Having sides unequal in length.
Isosceles Having two sides of equal length.
Created by: ashannon