A polyhedron with a polygon base and triangular sides that all meet a common vertex. (a)  

A four-sided polygon. (a)  

A ten sided polygon. (a)  

A pair of opposite congruent angles formed by intersecting lines. (a)  

A three-dimensional figure with all points the same distance from the center. (a)  

The theorem that states that the measures of the angles in a triangle add to 180 degrees. (a)  

A polygon with congruent angles and sides. (a)  

Having the same size and shape. (a)  

A triangle with at least two congruent sides. (a)  

A seven-sided polygon. (a)  

An exact location that has no size. (a)  

Lines in a plane that do not intersect. (a)  

A twelve-sided polygon. (a)  

Angles in the same plane that have a common vertex and a common side. (a)  

A triangle with three congruent sides. (a)  

Figures with the same shape but not necessarily the same size. (a)  

A quadrilateral with exactly one pair of parallel sides. (a)  

A rectangle with four congruent sides. (a)  

A parallelogram with all sides congruent. (a)  

A triangle with no congruent sides. (a)  

A three-dimensional figure with one vertex and one circular base. (a)  

A five-sided polygon. (a)  

The theorem that states the sum of any two lengths of a triangle must be greater than the third length. (a)  

A straight path that has no thickness and extends forever. (a)  

A parallelogram with four right angles. (a)  

A polygon with non-congruent sides and angles. (a)  

A triangle with all angles measuring less than ninety degrees. (a)  

A triangle containing one obtuse angle. (a)  

A polyhedron that has two congruent polygon-shaped bases and other faces that are all parallelograms. (a)  

A quadrilateral with two pairs of parallel sides. (a)  

Two angles whose measure have a sum of 180 degrees. (a)  

A six-sided polygon. (a)  

Lines that intersect to form right angles. (a)  

An eight-sided polygon. (a)  

A flat surface that has no thickness and extends forever. (a)  

A nine-sided polygon. (a)  

Two angles whose measure have a sum of 90 degrees. (a)  

The number of square units needed to cover a given surface. (a)  

The distance around a circle. (a)  

A line segment that passes through the center of a circle and has endpoints on the circle. (a)  

A line segment with one endpoint at the center of a circle and the other on the circle. (a)  

A line segment with endpoints on a circle. (a)  

The point inside a circle that is the same distance from all points on the circle. (a)  

A section enclosed by two radii and the arc joining their endpoints. (a)  

The ratio of the circumference of a circle to the length of its diameter. (a)  

The number of cubic units needed to fill a given space. (a)  

On an angle or polygon, the point where two sides intersect. (a)  

The sum of the areas of the faces, or surfaces, of a three dimensional figure. (a)  

A figure made up of simple geometric shapes. (a)  

Lines that cross at exactly one point. (a)  

A part of a circle named by its endpoints. A piece of the circumference. (a)  

A unit of measure for angles. (a)  

An arrangement of two-dimensional figures that can be folded to form a polyhedron. (a)  

A three-dimensional figure with two parallel, congruent circular bases connected by a curved lateral surface. (a)  

A two-dimensional shape that makes up one surface of a three-dimensional shape. (a)  

It is where more than 2 faces meet on a three-dimensional shape. (a)  

In a polyhedron it is the line segment where two faces meet. (a)  

Description of how it is placed in the space it occupies. (How it is positioned visually.) (a)