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Math

Geometry

TermDefinition
Point An exact location in space.
Line A straight path of points that continues without end in both directions.
Line Segment Part of a line between two endpoints.
Ray A part of a line that has one endpoint and continues without end in one direction.
Angle Formed by two rays or line segments that have the same endpoint. The shared endpoint is called the vertex.
Right Angle A 90 degree angle
Straight Angle A 180 degree angle
Acute Angle An angle less than 90 degrees ( 1 to 89 )
Obtuse Angle An angle greater than 90 degrees but less than 180 degrees ( 91 to 179 )
Intersecting Lines Lines in a plane that cross at exactly one point. Intersecting lines form four angles.
Parallel Lines Lines in a plane that are always the same distance apart. Parallel lines never intersect.
Perpendicular Lines Lines in a plane that intersect to form four right angles.
Trapezoid At least 1 pair of parallel sides
Parallelogram - 2 pairs of parallel sides - 2 pairs of sides of equal length
Rhombus - 2 pairs pairs of parallel sides - 4 sides of equal length
Rectangle - 2 pairs of parallel sides - 2 pairs of sides of equal length - 4 right angles
Square - 2 pairs of parallel sides - 4 sides of equal length - 4 right angles
Line Symmetry Can be folded about a line so that its two parts match exactly.
Line of Symmetry Divides a shape into two parts that are the same size and shape.
Created by: Clewis196q
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