19 terms

Geometry Vocab

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Acute angle
Less than 90 degrees
Obtuse angle
Greater than 90 degrees
Equilateral triangle
Three equal sides
Isosceles triangle
Two equal sides
Scalene triangle
No equal sides
Hexagon
Six sided shape
Octagon
Eight sided shape
Quadrilateral
Four sided shape
Ray
Right angle
Parallel Lines
Perpendicular lines
Intersecting lines
Symmetry
Square
Opposite sides are equal and parallel. All sides are the same length.
Rectangle
Opposite sides are equal and parallel. 2 sets of parallel lines.
Rhombus
4 sided shape where opposite sides and opposite angles are equal. All sides have equal length.
Parallelogram
Opposite sides are equal and parallel. All opposite angles are equal.
Trapezoid
Has 1 pair of parallel lines.
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