Math 1 Unit 2 Vocab

2. No sides the same length.
7. The side across from an angle.
8. The perpendicular segment from a vertex to the opposite side or to the line that contains the opposite side.
9. A triangle with one obtuse angle.
11. The angles inside a polygon.
13. A four sided closed figure.
14. A three sided closed polygon.
15. The angles that form linear pairs with the interior angles.
16. A segment that connects the midpoints of two sides of triangle.
21. A quadrilateral with two pairs of parallel sides.
22. Two sides the same length.
23. A triangle with three equal angles.

1. An operation that moves or changes a geometric figure in the same way to produce a new figure called an image.
3. A sequence of reflections, translations, and/or rotations.
4. The side across from a side.
5. In an isosceles triangle, the two angles adjacent to the base.
6. A segment from the vertex to the midpoint of the opposite side.
10. All sides the same length.
12. The sum of the measures of the interior angles of a triangle is 180 degrees.
17. The relationship involving two sides and the angle they form.
18. A triangle with one right angle.
19. The side connecting two vertices of a triangle.
20. A triangle with three acute angles.