geometry

2. a triangle that has three acute angles
3. if two angles are complements of the same angle or of congruent angles then the two angles are congruent
5. angles if two coplanar angles that have a common side and a common vertex but no common interior points
6. a triangle that has three congruent sides
8. a triangle that has one obtuse angle
10. if two lines are cut by a transversal so that alternate interior angles are congruent then the lines are parallel
14. is an angle formed by a side and an extension of an adjacent sides
15. a triangle that has no congruent sides
16. a triangle that has a least two sides congruent
17. if two lines are cut by a transversal so that same side interior angles are supplementary then the lines are parallel
18. if two sides and the included angle of one triangle are congruent to two sides and the included angle of anot

1. are two angles whose sides form two pairs of opposite rays
2. if two parallel lines are cut by a transversal then the pairs of alternate interior angles are congruent
3. if two angles are supplements of the same angle or of congruent angles then two angles are congruent
4. triangle then the two triangles are congruent
7. if the three sides of one triangle are congruent to the three sides of another triangle then two triangles are congruent
9. if two parallel lines are cut by a transversal then the pairs of corresponding angles are congruent
10. if two lines are cut by a transversal so that corresponding angles are congruent then the lines are parallel
11. if two parallel lines are cut by a transversal then the pairs of interior angles on the same side of the transversal are supplementary
12. the sum of the measures of the angles of a triangle is 180
13. a triangle that has one right angle