Quadrilaterals, Quadrilaterals (Geometry)

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29 Terms

1
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Quadrilateral

A flat shape with four straight sides. (closed)

<p>A flat shape with four straight sides. (closed)</p>
2
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rhombus

A quadrilateral where all sides have equal length. It is a type of parallelogram.

<p>A quadrilateral where all sides have equal length. It is a type of parallelogram.</p>
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square

A quadrilateral where all sides have equal length, and every interior angle is a right angle (90 degrees). Special rectangle.

<p>A quadrilateral where all sides have equal length, and every interior angle is a right angle (90 degrees). Special rectangle.</p>
4
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rectangle

A quadrilateral where all angles are right angles (90°). Also opposite sides are parallel and of equal length.

<p>A quadrilateral where all angles are right angles (90°). Also opposite sides are parallel and of equal length.</p>
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trapezoid

A quadrilateral that has a pair of opposite sides parallel.

<p>A quadrilateral that has a pair of opposite sides parallel.</p>
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parallelogram

A quadrilateral with straight sides where opposite sides are parallel and equal.

<p>A quadrilateral with straight sides where opposite sides are parallel and equal.</p>
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polygon

A two-dimensional shape with straight sides.

<p>A two-dimensional shape with straight sides.</p>
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regular polygon

A polygon is regular when all angles are equal and all sides are equal (otherwise it is "irregular").

<p>A polygon is regular when all angles are equal and all sides are equal (otherwise it is "irregular").</p>
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irregular polygon

A polygon that does not have all sides equal and all angles equal.

<p>A polygon that does not have all sides equal and all angles equal.</p>
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Parallelogram

Give the best name for this polygon.

<p>Give the best name for this polygon.</p>
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Trapezoid

Give the best name for this polygon.

<p>Give the best name for this polygon.</p>
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Rectangle

Give the best name for this polygon.

<p>Give the best name for this polygon.</p>
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Quadrilateral

Give the best name for this polygon.

<p>Give the best name for this polygon.</p>
14
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Rhombus

Give the best name for this polygon.

<p>Give the best name for this polygon.</p>
15
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Rectangle

Give the best name for this polygon.

<p>Give the best name for this polygon.</p>
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Rhombus

Give the best name for this polygon.

<p>Give the best name for this polygon.</p>
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Parallelogram

Give the best name for this polygon.

<p>Give the best name for this polygon.</p>
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Isosceles trapezoid

Give the best name for this polygon.

<p>Give the best name for this polygon.</p>
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Quadrilateral

Give the best name for this polygon.

<p>Give the best name for this polygon.</p>
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A quadrilateral with two pair of parallel sides

Definition of a Parallelogram

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A quadrilateral with one pair of parallel sides

Definition of a trapezoid

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A quadrilateral with all sides congruent

Definition of a rhombus

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A parallelogram with four 90 degree angles.

Definition of a rectangle

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A trapezoid with one 90 degree angle

Definition of a right trapezoid

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A trapezoid with congruent non-parallel sides

Definition of an isosceles trapezoid

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Rectangle, Rhombus, Square

Three types of parallelograms

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parallel lines

lines in the same plane that never intersect

<p>lines in the same plane that never intersect</p>
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perpendicular lines

Lines that intersect to form right angles

<p>Lines that intersect to form right angles</p>
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360 degrees

The interior angle sum of any quadrilateral is ___.