Geometry

3. Any geometric object or shape such as a line, point is said to be coplanar if they lie on the same plane
4. a location
7. a point, line, or curve common to two or more objects (such as lines, curves, planes, and surfaces) type of triangle that has one of its angles equal to 90 degrees
10. part of a straight line that is bounded by two distinct end points, and contains every point on the line that is between its endpoints
11. a simple (non-self-intersecting) quadrilateral with two pairs of parallel sides
12. a polygon that has 8 sides and 8 angles
13. a closed two-dimensional polygon with six sides
14. have the same shape and size, or if one has the same shape and size as the mirror image of the other a trunk

1. the highest point; the top or apex
2. the space (usually measured in degrees) between two intersecting lines or surfaces at or close to the point where they meet
4. plane figure with at least three straight sides and angles, and typically five or more
5. that passes through the midpoint of a given segment
6. an infinitely long object with no width, depth, or curvature
8. a polygon with three corners and three sides, one of the basic shapes in geometry
9. a line with a single endpoint (or point of origin) that extends infinitely in one direction