Angles and Triangles

2. the two angles that are inside the triangle and opposite from the exterior angle
4. a triangle that has two sides of equal length
6. all sides of the triangle are equal
7. angles that have a common side and a common vertex (corner point), and don't overlap
8. is straight and has no bends or curves: measures 180 degrees
9. angle pair that sum to 180 degrees
12. an angle that is greater than 90 degrees
16. when a transversal crosses two parallel lines.; the angle on the inside
18. non-adjacent angles that are congruent formed by the intersection of two lines
19. A triangle with all sides of different lengths
20. a 90 degree angle

1. the angles in matching corners when parallel lines are crossed by a transversal
3. when a transversal crosses two parallel lines.; the angle on the outside
5. they go on forever and never touch, have the same slope
10. an angle less than 90 degrees
11. Angles that add up to 90 degrees
13. the line that goes through two parallel lines
14. an angle that measures 180 degrees
15. when two angles have the same measure
17. a flat geometric figure that has three sides and three angles