Geometry Vocabulary

4. Perpendicular lines form ________ angles
9. Two lines that form right angles
11. To cut an angle in half
13. Angles that add to 180 degrees
15. Angles in the same position of the transversal
17. Lines in the same plane but never touch
18. Angles outside the parallel lines, opposite sides of the transversal
21. 3 medians of a triangle intersect at this point
22. Angle C is congruent to Angle C
24. A line drawn from the vertex of a triangle perpendicular to the opposite side
25. In similar triangles, sides are this

1. Bisecting a segment at right angles
2. To cut a segment in half
3. A line drawn from the vertex of a triangle to the midpoint on the opposite side
5. Angles that add to 90 degrees
6. Two adjacent supplementary angles
7. To cut in half
8. In similar triangles, angles are this
10. To prove triangles similar, you need 2 pairs of ____________ congruent
12. A point in the middle of a line segment
14. An angle measuring less than 90 degrees
16. Angles inside the parallel lines, opposite sides of the transversal
19. Parallel to the third side, in the ratio of 1:2, connecting midpoints
20. These angles are opposite each other when two lines intersect
23. An angle measuring more than 90, but less than 180