Math Review Definitions

5. A 3D shape with the base of a polygon and with three or more triangle shaped faces that meet at a point above the base.
6. A point where two or more curves, lines, or edges meet or intersect.
7. A term used to describe what a 3D shape would look like if it was opened out and laid flat.
8. An angle of 90°, as in a corner of a square or at the intersection of two perpendicular lines.
9. A group of numbers indicating a point,or plane
11. Measures the space needed to cover the outside of a three-dimensional shape.
12. If all the polygon sides and interior angles are equal.
13. A plane figure with at least three straight sides and angles.
15. The total distance around a shape.

1. A triangle in which all three sides are of different lengths and all three angles are of different measures.
2. A triangle with two congruent sides.
3. The amount of space in a certain 3D object.
4. Two straight lines joined to a point making a 90 degree angle with each other.
10. The measurement of inside a 2D shape.
14. A figure whose two end faces are similar,equal,and parallel rectilinear figures and whose sides are parallelograms.