1.
A solid figure with 6 faces that are congruent squares: 
Cube
2.
A solid figure with bases that are rectangles: 
Rectangular Prism
3.
Acute angle: An angle that measures less than 90 degrees
4.
Base: Can also be called a face and is the flat surface at the top or bottom of a solid figure
5.
Cone: A solid figure with a circle as a base and curved surface that meets a point
6.
Congruent: Figures that are the same size and shape
7.
Cylinder: A solid figure with 2 congruent circles as bases
8.
Edge: A line segment where 2 faces meet
9.
Face: The flat surface of a solid that does not roll
10.
Intersecting lines: Lines that cross at a point
11.
Net: A net is a flat pattern that can be folded to make a solid figure.
12.
Obtuse angle: An angle that measures more than 90 degrees
13.
Parallel lines: Lines that never intersect, think railroad tracks
14.
Pyramid: A solid figure with a polygon base and triangular faces with a common point
15.
Right angle: An angle that measures 90 degrees
16.
Solid Figure: A geometric figure that has length, width, and height
17.
Sphere: A solid figure in the shape of a ball
18.
Vertex/Vertices: The point where 3 or more edges meet in a solid figure