Vocab Words

4. an angle within a shape that contains the base of the shape as one of its sides
6. a triangle with three acute angles
8. the side connecting two vertices of a triangle
10. three-sided closed polygon
11. the angles inside a polygon
13. segment that connects the midpoints of two sides of a triangle
14. the relationship involving two sides and the angle they form
15. the side across from an angle
17. a triangle with three equal angles
19. a line measured by how steep it is
20. no sides the same length
21. a four-sided closed figure
23. the angles that form linear pairs with the interior angles

1. a triangle with one right angle
2. the angle across from a side
3. two sides the same length
5. when an object is moved from one location to another and the size and shape of the object have not changed
7. a segment from the vertex to the midpoint of the opposite side
9. all sides the same length
10. an operation that moves or changes a geometric figure in some way to produce a new figure called an image
12. a triangle with one obtuse angle
16. the sum of measures of the interior angles of a triangle that is 180 degrees
18. a quadrilateral with two pairs of parallel lines
22. the perpendicular segment from a vertex to the opposite side or to the line that contains the opposite side