Across
- 1. the three sides of one triangle are congruent to three sides of another triangle, then the two triangles are congruent.
- 4. A triangle that has a right angle
- 7. corresponding parts of congruent triangles are congruent.
- 9. a dot and named by a capital letter
- 10. If two segments are each congruent to a third segment, then they're congruent to each other.
- 13. if two angles and a non-included side of one triangle are congruent to two angles and the corresponding non-included side of another triangle, then the two triangles are congruent.
- 14. an angle, line segment, or shape is always congruent to itself
- 16. infinitely long collection of points extending in two opposite directions
- 17. two sides and the included angle of one triangle are congruent to two sides and the included angle in a second triangle, then the two triangles are congruent.
- 19. a triangle with one obtuse angle and two acute angles
- 20. if two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the two triangles are congruent.
Down
- 2. a pair of adjacent angles formed when two lines intersect.
- 3. A triangle with three equal interior angles
- 5. a triangle with three acute angles
- 6. The length along a line or line segment between two points on the line or line segment.
- 8. a point at or near the middle of, or equidistant from, both ends, as of a line
- 11. a flat, two-dimensional surface that extends infinitely far.
- 12. in an isosceles triangle, the angles opposite the congruent sides are congruent.
- 15. a line that has one endpoint and goes on infinitely in only one direction
- 18. Numerical measure of a line's inclination relative to the horizontal.