Across
- 2. angles that share a common ray
- 3. if 2 angles of 1 triangle are congruent to 2 angles of a 2nd triangle, then the 3rd pair of angles are congruent
- 6. a triangle with no right angles
- 10. in a plane if a line is perpendicular to one of 2 parallel lines, then it is perpendicular to the other
- 13. if a is a real number a(b+c)=ab+ac
- 15. if a=b and b=c,then a=c
- 16. if a=b,then ac=bc if a=b,then a/c=b/c (if c doesn't = 0)
- 19. if a=a,then a=a
- 20. angle across from each other
Down
- 1. the measure of an exterior angle of a triangle is equal to the sum of the measures of the 2 remote interior angles
- 4. if a=b,then a+c=b+c If a=b,then a-c=b-c
- 5. if a=b,then b=a
- 7. a line in the same plane as a circle that intersects the circle in exactly one point
- 8. if 2 parallel lines are cut by a transversal, then each pair of alternate interior angles is congruent
- 9. if 2 parallel lines are cut by a transversal, then each pair of consecutive interior angles is supplementary
- 11. if a=b,then a can be replaced by b in any equation
- 12. if 2 parallel lines are cut by a transversal, then each pair of alternate exterior angles is congruent
- 14. if 2 parallel lines are cut by a transversal,then each pair of corresponding angles is congruent
- 17. the sum of the measures of the angles of a triangle is 180 degrees
- 18. 2 angles that create a straight line