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26 Cards in this Set

  • Front
  • Back
Semiregular Polyhedron
A polyhedron with several different regular polygonal regions for faces but with the same arrangement of polygons at each vertex.
A polyhedron formed by using a polygon for the base and a point not in the plane of the base that is connected with line segments to each vertex of the base.
Acute Triangle
A triangle with all angles less than 90 degrees.
Isosceles Trapezoid
A trapezoid with one pair of congruent sides.
A quadrilateral with four sides that are congruent.
The union of polygonal regions, any two of which have at most a side in common.
Right triangle
A triangle with one 90 degree angle.
Regular Polygon/
Regular n-gon
A polygon where all sides are congruent and all angles are congruent.
Isosceles Triangle
A triangle with at least two congruent sides.
Right Prism
A prism where the lateral faces are rectangles and the dihedral angle is formed bya base and a lateral face is a right angle.
Scalene Triangle
A triangle that has no congruent sides or angles.
A quadrilateral with exactly one pair of parallel sides.
A simple closed "curve" made up of line segments (Polygon means many angles).
A quadrilateral with two nonoverlapping pairs of adjacent sides that are the same length.
Equilateral Triangle
A triangle with all sides and all angles congruent.
A quadrilateral with two pairs of parallel sides.
Obtuse Triangle
A triangle with one angle greater than 90 degrees.
A quadrilateral with four sides the same length and four right angles.
A quadrilateral with four right angles.
A closed figure composed of exactly three line segments
Simple Closed Curve
A curve that can be traced with the same starting and stopping points and without crossing or retracing any part of the curve.
Regular Polygon/
Regular n-gon
A polygon where all sides are congruent and all angles are congruent.
A closed figure composed of four line segments.
Right Regular Pyramid
A pyramid whose bases are regular polygons and whose lateral faces are isosceles triangles.
Regular Polyhedron
A polyhedron in which all the faces are identical regular polygonal regions and all dihedral angles have the same measure.
A polyhedron with two opposite faces that are identical polygons.