Vocab Topic7

2. a branch of mathematics that deals with the measurement, properties, and relationships of points, lines, angles, surfaces, and solids.
5. a solid that is composed of flat surfaces, each flat surface is called a ____
7. a plane figure with three straight sides and three angles.
9. a branch of mathematics that deals with the measurement, properties, and relationships of points, lines, angles, surfaces, and solids
10. The surface a solid object stands on, or the bottom line of a shape such as a triangle or rectangle.
12. A line meeting another at a right angle.
15. a 3-dimensional solid figure that has a polygon for a base and has a single vertex that is not in the plane of the polygon base.
16. a quadrilateral with only one pair of parallel sides.
18. To separate into two or more parts.
20. the measure of the amount of space inside of a solid figure.

1. a solid figure with many plane faces, typically more than six.
3. pattern that you can cut and fold to make a model of a solid shape.
4. a quadrilateral whose four sides can be grouped into two pairs of equal-length sides that are adjacent to each other.
6. The line where two faces meet.
8. A four-sided shape with opposite parallel sides.
11. The total area of the surface of a three-dimensional object.
13. a parallelogram with opposite equal acute angles, oppite equal obtuse angles, and four equal sides.
14. The amount of units within a 2-dimensional shape.
17. each angular point of a polygon, polyhedron, or other figures.
19. a solid geometric figure whose two end faces are similar, equal, and parallel rectilinear figures, and whose sides are parallelograms.