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36 Cards in this Set

  • Front
  • Back
Line
a straight continuous arrangement of infinitely many points
Plane
a flat surface that goes on forever
Collinear
on the same line
Coplanar
on the same plane
Congruent Segments
segments with the same measure or length
Midpoint
a point that evenly divides a segment in half
Bisects
divides into two equal parts
Angle
2 rays that share a common endpoint
Vertex
a common endpoint of 2 rays
Congruent angles
angles that have the same measure
Angle bisector
a ray that begins at the vertex and divides the angle in half
Complementary angles
angles that add up to 90 degrees
Supplementary angles
angles that add up to 180 degrees
Polygon
a closed figure with no curves
Vertex
each endpoint where the sides meet
Convex polygon
a polygon that has no diagonals on the outside of it
Concave polygon
a polygon that has at least one diagonal on the outside of it
Congruent polygon
polygons that are exactly the same size and shape
Equilateral polygon
a polygon with all the sides the same length
Equiangular polygon
a polygon with all the angles the same measure
Regular polygon
a polygon with all sides the same length and all angles the same measure
Trapezoid
a quadrilateral with one set of parallel sides
Parallelogram
a quadrilateral with 2 sets of parallel sides
Rhombus
a quadrilateral with all side lengths the same and 2 sets of parallel sides
Rectangle
a quadrilateral with four 90 degree angles and 2 sets of parallel sides
Square
a rectangle with all side lengths the same
Radius
a segment from the center to a point on the edge of a circle
Diameter
a line segment that goes through the center whose endpoints are on the edge of the circle.
Congruent circles
circles that share the same radius.
Concentric circles
circles that are on the same plane and share the same center
Semicircle
an arc that has the same endpoints as a diameter.
Minor arc
an arc that is smaller than a semicircle.
Major arc
an arc that is bigger than a semicircle.
Vertical angles
the pair of angles that are directly opposite each other when two lines intersect
Linear pair of angles
two angles that are adjacent (share a leg) and supplementary
Kite
a quadrilateral that has two different pairs of equal adjacent sides