Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

39 Cards in this Set

  • Front
  • Back
A plane figure formed by coplanar segments such that 1. each segment intersects exactly two other segments, one at each endpoint; and 2. no two segments with a common endpoint are collinear.
sides of a polygon
has to be 3 or more
the endpoint of a side
the sides don't end
non-convex, concave
a non convex
equilateral polygon
all the sides are congruent
equiangular polygon
all the interior angles are congruent
regular polygon
A polygon that is both equiangular and equilateral.
diagonal of a polygon
a segment that joins two nonconsecutive vertices
A quadrilateral with both pairs of opposite sides parallel.
A quadrilateral with four congruent sides.
A quadrilateral with four right angles.
A quadrilateral with four right angles and four congruent sides.
A quadrilateral with exactly one pair of parallel sides, called bases. The other sides are legs.
bases of a trapezoid
the parallel sides
base angles of a trapezoid
two pairs of angles whose common side is the base of a trapezoid
legs of a trapezoid
the nonparallel sides
isosceles trapezoid
A trapezoid with congruent legs.
mid-segment of a trapezoid
a segment that connects the midpoints of two sides of a triangle
A quadrilateral that has two pairs of congruent sides, but opposite sides are not congruent.
the new figure that results from the transformation of a figure in a plane
the original figure in the transformation of figure in a plane
the operation that maps or moves a preimage onto an image
A transformation that maps every segment to a congruent segment. Also called a congruence mapping.
a type of transformation that uses a line that acts like a mirror, called the line of reflection, with an image reflected in the line
line of reflection
acts like a mirror
line of symmetry
a line that a figure in the plane has if the figure can be mapped out onto itself nu a reflection in the line
a type of transformation in which a figure is turned about a fixed point called the center of rotation
center of rotation
a fixed point
angle of rotation
the angle formed when rays are from the center of rotation to a point and its image.
rotational symmetry
a figure in the plane has rotational symmetry if the figure can be mapped onto itself by a rotation of 180 or less
a type of transformation
a quantity that has both direction and magnitude and is represented by an arrow drawn between two points
initial point
starting point
terminal point
ending point
component form
the form of a vector that combines the horizontal and vertical components of the vector
glide reflection
a type of reflection
the result when two or more transformations are combined to produce a single transformation
frieze pattern or border pattern
a pattern that extends to the left and right in such a way that the pattern can be mapped onto itself by a horizontal translation