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