Polygon - a closed plane figure made up of line segments, Triangle - a polygon with 3 sides, Quadrilateral - a polygon with 4 sides, Pentagon - a polygon with 5 sides, Hexagon - a polygon with 6 sides, Octogon - a polygon with 8 sides, Vertex (vertices) - a point where the sides of a polygon meet, Attribute - a characteristic of a shape, Equilateral triangle - all 3 sides are the same length, Isosceles triangle - 2 of the 3 sides are the same length, Scalene triangle - none of the 3 sides are the same length, Right triangle - has one 90º angle, Acute triangle - has 3 angles less than 90º, Obtuse triangle - has one angle greater than 90º, Parallelogram - a quadrilateral with both pairs of opposite sides parallel and equal in length, Trapezoid - a quadrilateral that has exactly one pair of parallel sides, Parallel sides - the sides are the same distance apart at every point, Rectangle - a parallelogram with four right angles, Rhombus - a parallelogram with all the sides the same length, Square - a rectangle with all sides he same length,

Geometry Vocab

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