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Geometry Terms

TermDefinition
Acute Triangle A triangle with 3 acute angles
Right Triangle A triangle with 1 right angle and 2 acute angles
Obtuse Triangle A triangle with 1 obtuse angle and 2 acute angles
Equilateral Triangle A triangle that has three sides of equal length
Isosceles Triangle A triangle that has at least two sides of equal length
Scalene Triangle A triangle that has three different side lengths
Trapezoid A quadrilateral with one pair of parallel sides
Parallelogram A quadrilateral with 2 pairs of parallel sides
Rectangle A quadrilateral with 2 pairs of parallel sides and 4 right angles
Rhombus A quadrilateral with 2 pairs of parallel sides and 4 sides of equal length
Square A quadrilateral with 2 pairs of parallel sides, 4 right angles, and 4 sides of equal length
Polygon A closed plane figure that is formed by three or more segments called sides
Regular polygon A polygon with equal side lengths and equal angle measures
Triangle A polygon with 3 sides
Quadrilateral A polygon with 4 sides
Pentagon A polygon with 5 sides
Hexagon A polygon with 6 sides
Octagon A polygon with 8 sides
Created by: jlparker