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28 Cards in this Set

  • Front
  • Back

A polygon with 5 sides

Pentagon

Angles whose sum is 180 degrees are

Supplementary

Has no congruent sides

Scalene triangle

Measures less than 90 degrees

Acute angle

Do not lie in the same plane and are neither parallel

Skew lines

Are formed by two intersecting lines and are the opposite each other

Vertical angles

Has at least two congruent sides

Isosceles triangle

Polygon with all sides and all angles congruent

Regular polygon

Quadrilateral with both pairs of opposite sides parallel

Parallelogram

Is a part of a circle

Arc

Quadrilateral with exactly one pair of parallel sides

Trapezoid

Is a quadrilateral that is a parallelogram with four congruent sides

Rhombus

Angle with its vertex at the center of a circle

Central angle

Segment with both endpoints on a circle

Chord

Set of points in a plane that are all the same distance from a given point

Circle

Sum of the measures of two angles is 90 degrees

Complementary

Means equal

Congruent

Ten sided polygon

Decagon

Center of a circle

Diameter

Parallelogram with four right angles

Rectangle

Series of points that extend in the opposite directions without end

Line

Has all 3 sides the same length

Equilateral triangle

Is a polygon with six sides

Hexagon

Segment that connects the center of a circle to the circle

Radius

Flat surface that extends indefinitely in all directions and has no thickness

Plane

Lines that are in the same plane that never intersect

Parallel lines

Share a vertex and a side but have no interior sides in common

Adjacent angles

Measures between 90 degrees and 180 degrees

Obtuse