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Study > Unit 12 Vocabulary (Geometry) > Flashcards

Unit 12 Vocabulary (Geometry) Flashcards

1
Q

A 2-dimensional closed figure made up of line segments

A

Polygon

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2
Q

A line segment that connects two non-consecutive vertices of a polygon

A

Diagonal

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3
Q

A polygon with four sides

A

Quadrilateral

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4
Q

A quadrilateral with two pairs of parallel sides

A

Parallelogram

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5
Q

A parallelogram with four right angles

A

Rectangle

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6
Q

A parallelogram in which all sides are the same length

A

Rhombus

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7
Q

A polygon that is both equilateral and equiangular

A

Regular Polygon

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8
Q

Has at least one diagonal with points outside the polygon

A

Concave polygon

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9
Q

All diagonals are in the interior of the polygon

A

Convex polygon

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10
Q

The sum of the measures of the interior angles of a quadrilateral is 360 degrees

A

Interior Angles of Quadrilateral

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11
Q

A quadrilateral that has two pairs of consecutive congruent sides

A

Kite

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12
Q

A quadrilateral with exactly one pair of parallel sides

A

Trapezoid

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13
Q

A parallelogram with four congruent sides and four right angles

A

Square

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14
Q

Sides next to each other

A

Consecutive sides

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15
Q

Two sides across from each other

A

Opposite sides

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16
Q

Lines in the same plane that never intersect

A

Parallel lines

17
Q

Two lines that intersect to form right angles

A

Perpendicular lines

18
Q

Angles that add together to equal 180 degrees

A

Supplementary

19
Q

All sides are congruent

A

Equilateral

20
Q

Two angles that do not share a side

A

Opposite angles

21
Q

Having the same size and shape

A

Congruent

22
Q

All angles are congruent

A

Equiangular

23
Q

To divide into two congruent parts

A

Bisect

24
Q

A polygon with three sides

A

Triangle

25
Q

A polygon with five sides

A

Pentagon

26
Q

A polygon with six sides

A

Hexagon

27
Q

A polygon with seven sides

A

Heptagon

28
Q

A polygon with eight sides

A

Octagon

29
Q

A polygon with nine sides

A

Nonagon

30
Q

A polygon with ten sides

A

Decagon

31
Q

A polygon with eleven sides

A

Undecagon

32
Q

A polygon with twelve sides

A

Dodecagon

33
Q

The sum of the interior angles of any polygon is 180(n-2)

A

Polygon Interior Sum Angle Theorem

34
Q

The sum of the interior angles of a regular polygon is 180(n-2)/n

A

Regular Polygon Interior Sum Angle Theorem

35
Q

The sum of the measures of the exterior angles of a polygon, one at each vertex, is 360

A

Polygon Exterior Angle Sum Theorem

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