Geometry Vocab

2. two angles that have a common side and a common vertex but do not overlap
4. has three acute angles
5. an object that has both a magnitude and a direction
7. straight line segment whose endpoints both lie on a circular arc
12. the perimeter of a circle or ellipse
13. adjacent/hypotenuse
14. a branch of mathematics that studies relationships between the sides and angles of triangles
15. an image produced by or as if by a mirror
16. a triangle that has two sides of equal length
18. A line segment that goes from one corner to another, but is not an edge
20. a half circle
21. a statement that two ratios are equal

1. oppisite/adjacent
3. a 3D figure made from cutting a sphere into two equal halves with one flat side.
4. a segment of the edge of a circle
6. the amount of space occupied by a three-dimensional figure
8. a set of points which satisfies a given condition or situation for a shape or a figure
9. having the same size and shape
10. a line that passes through two lines in the same plane at two distinct points
11. opposite/hypotenuse
17. when three or more points lie on the same line
19. the middle number in a sorted, ascending or descending, list of numbers