Geometry Unit

3. an angle which is equal to 90 degrees.
4. a point where two or more straight lines meet, a corner.
7. has all angles equal and all sides equal.
8. a solid object with two identical ends and flat sides.
10. the distance around a two-dimensional shape.
11. a solid object where the base is a polygon and the sides are triangles which meet at the top.
13. a triangle with two equal sides.
16. any of the individual surfaces of a solid object.

1. a triangle with all sides of different lengths.
2. the amount of space inside the boundary of a flat(2-dimensional)objects such as a triangle or circle
5. a plane shape(two dimensional) with straight sides
6. lines lines that are at right angles (90 degrees) with straight sides.
9. area the total area of the surface of a three-dimensional object.
12. the amount of 3-dimensional space an object occupies, cubic units.
14. a line segment that joins two vertices.
15. a pattern that you can cut and fold to make a model of a solid shape.