Quadrilaterals 5th Grade Math
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14 Terms
Quadrilaterals
Polygons (closed figures with straight sides) with four sides; they can be classified by their sides and angles.
Rectangle
Opposite sides EQUAL and PARALLEL; FOUR RIGHT ANGLES
Square
Four sides EQUAL; opposite sides PARALLEL; FOUR RIGHT ANGLES
Trapezoid
Only ONE PAIR of OPPOSITE SIDES is PARALLEL
Parallelogram
OPPOSITE sides are EQUAL and PARALLEL
Kite
A quadrilateral with FOUR SIDES that can be grouped into TWO PAIRS of EQUAL length sides that are ADJACENT to each other
Rhombus
A PARALLELOGRAM with opposite equal ACUTE angles, opposite equal OBTUSE ANGLES, and FOUR EQUAL SIDES
Segment
A line with TWO ENDPOINTS
Line
A straight that extends in both directions without end.
congruent
Having the same size and shape
adjacent
near, next to
right angle
an angle that measures 90 degrees
acute angle
an angle that measures less than 90 degrees
obtuse angle
An angle that measures more than 90 degrees but less than 180 degrees
