Geometry Crossword

2. Has no size or shape. Always use a capital letter.
5. The three medians of a triangle intersect here. The short side of the line from this point is 1/3 the length of the full line.
6. Two angles that are adjacent and supplementary. They form a straight line.
9. Formed by two rays with a common endpoint. The rays are called the sides.
11. A flat surface made up of points. Extends indefinitely.
13. y-y_1=m(x-x_1)
16. a^2+b^2=c^2
18. Polygons with the same shape but different sizes. If polygons are similar, then their perimeters are also proportional.
21. d=√(x_2-x_1)^2+(y_2-y_1)^2
22. If AB=CD, then the segments are this. It is often written with an equal sign and a tilde (~) above it.
24. The angle bisector of the angle intersects here. It is always equidistant from the sides of the triangle.
25. (M_x=x_1+x_2/2, M_y=y_1+y_2/2)

1. Any two angles whose sum is 180 degrees. These are not a linear pair.
3. Any two angles whose sum is 90 degrees. Both angles are acute.
4. The perpendicular bisectors of the sides of a triangle intersect here. It is always equidistant from the vertices of the triangle
7. A segment joining a vertex to the opposite side so that it is perpendicular to that side. It can be inside, outside, or a side of a triangle.
8. A comparison of two or more quantities. Can be simplified.
10. A comparison of three or more quantities. It is written as (a:b:c).
12. Has no thickness or width. Made up of points.
14. An equation that states two ratios are equal. It is written as (a/b=c/d).
15. Ax+By=C
17. Two coplanar lines that never intersect. Arrows are used to indicate these are ________ ____.
19. A segment that joins the vertex to the midpoint. It is on the opposite side of the vertex.
20. y=mx+b
23. The three altitudes of a triangle intersect here. The perpendicular lines do not always rest on the midpoint.