Across
- 1. If two sides of a triangle are congruent, then the angles opposite those sides are congruent.
- 4. If the two sides and an included angle of one triangle are congruent to the corresponding two sides and the included angle of another triangle, then the triangles are congruent.
- 5. It is the angle formed by the triangle's legs.
- 7. These are the congruent sides of an isosceles triangle.
- 11. This states that vertical angles, angles that are opposite each other, and formed by two intersecting lines, are congruent.
- 13. If the two angles and the included side of one triangle are congruent to the corresponding two angles and an included side of another triangle, then the triangles are congruent.
- 14. If the three sides of one triangle are congruent to the three sides of another triangle, then the triangles are congruent.
- 15. It is a statement that can be demonstrated to be true by accepted mathematical operations and arguments.
- 16. If two angles of a triangle are congruent, the sides opposite those angles are congruent.
Down
- 2. An angle or line segment is always congruent to itself.
- 3. If two angles and a non-included side of one triangle are congruent to the corresponding two angles and a non-included side of another triangle, then the triangles are congruent.
- 6. These are the two angles that have the base as a side.
- 8. It is the side opposite of the vertex angle.
- 9. It is the point at which the two legs of an isosceles triangle meet.
- 10. This is one common way to organize a proof in geometry is to have two columns: one for statements and one for reasons.
- 12. This is a statement presented mathematically that is assumed to be true.