Vocab Group 6: Quadrilaterals and Symmetry

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Last updated 12:01 PM on 8/5/26
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19 Terms

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Trapezoid

A quadrilateral with exactly one pair of parallel sides

<p>A quadrilateral with exactly one pair of parallel sides</p>
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Bases of trapezoid

the parallel sides of a trapezoid

<p>the parallel sides of a trapezoid</p>
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Base angles of a trapezoid

two angles that share a base of a trapezoid

<p>two angles that share a base of a trapezoid</p>
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Isosceles trapezoid

a trapezoid with congruent legs

<p>a trapezoid with congruent legs</p>
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Parallelogram

A quadrilateral with two pairs of parallel sides

<p>A quadrilateral with two pairs of parallel sides</p>
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Rectangle

A parallelogram with four right angles

<p>A parallelogram with four right angles</p>
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Kite

a quadrilateral with two pairs of adjacent sides congruent and no opposite sides congruent

<p>a quadrilateral with two pairs of adjacent sides congruent and no opposite sides congruent</p>
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Vertex angles of a kite

The angles between the pairs of congruent sides

<p>The angles between the pairs of congruent sides</p>
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Nonvertex angles of a kite

The two angles between consecutive noncongruent sides of a kite

<p>The two angles between consecutive noncongruent sides of a kite</p>
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Rhombus

A parallelogram with four congruent sides

<p>A parallelogram with four congruent sides</p>
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Square

A parallelogram with four congruent sides and four right angles.

<p>A parallelogram with four congruent sides and four right angles.</p>
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Symmetry

having the same shape, size, and position on both sides of a dividing line

<p>having the same shape, size, and position on both sides of a dividing line</p>
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Reflectional symmetry

symmetry in which one half of the image is a mirror image of the other over a line of reflection

<p>symmetry in which one half of the image is a mirror image of the other over a line of reflection</p>
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Line of symmetry

a line that divides a figure into two halves that are mirror images of each other

<p>a line that divides a figure into two halves that are mirror images of each other</p>
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Rotational symmetry

The ability of a figure to be rotated less than a full circle and exactly match its original image

<p>The ability of a figure to be rotated less than a full circle and exactly match its original image</p>
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Translational symmetry

the type of symmetry for which there is a translation that maps a figure onto itself

<p>the type of symmetry for which there is a translation that maps a figure onto itself</p>
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Bilateral symmetry

the property of being divisible into symmetrical halves on either side of a unique plane.

<p>the property of being divisible into symmetrical halves on either side of a unique plane.</p>
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Glide reflection

a transformation involving a translation followed by a reflection

<p>a transformation involving a translation followed by a reflection</p>
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Area

The number of square units required to cover a surface.