1
a solid that has one circular base and one vertex.
2
set of all points in a space that are the same distance from a point called the center.
3
an angle higher than 0 degrees and less than 90 degrees
4
two angles that add to 90 degrees
5
angles that add up to 180 degrees
6
a short part of circumference
7
the amount of space a figure covers
8
an angle that has a measure of 90 degrees
9
a triangle that has one right angle
10
a solid that is bounded by polygons
11
a ray that divides an angle into two angles that are congruent
12
13
the distance around a circle
14
a segment with arrowheads going forever
15
a closed figure in a plane that is made up of three or more line segments that intersects only at their endpoints
16
a parallelogram with four congruent sides and four right angles
17
the point from which all points on a circle are equidistant
18
two lines that never intersect
19
angles form on the outside of a polygon
20
a part of a line that consists of an endpoint and all points on one side of the end point
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