Across
- 2. A triangle with exactly two sides of equal length.
- 3. A point that divides a segment into two equal parts.
- 4. A triangle with all sides of equal length.
- 7. A triangle with all angles less than 90°.
- 8. A postulate stating that if two angles and a non-included side of one triangle are congruent to those of another, the triangles are congruent.
- 9. A postulate stating that if two angles and the included side of one triangle are congruent to those of another, the triangles are congruent.
- 11. A triangle with no equal sides.
- 12. A postulate stating that if three sides of one triangle are congruent to three sides of another, the triangles are congruent.
- 13. A triangle with one angle equal to 90°.
- 14. A triangle with one angle greater than 90°.
- 16. A pair of opposite angles formed by two intersecting lines, always congruent.
- 18. A line or segment that divides another segment or angle into two equal parts.
- 19. The sum of the interior angles of a triangle is always 180°.
Down
- 1. A property stating that any geometric quantity is congruent to itself.
- 5. An exterior angle is equal to the sum of the two non-adjacent interior angles.
- 6. If two sides of a triangle are congruent, the angles opposite them are also congruent.
- 10. A theorem stating that in right triangles, if the hypotenuse and one leg of one triangle are congruent to those of another, the triangles are congruent.
- 15. A postulate stating that if two sides and the included angle of one triangle are congruent to those of another, the triangles are congruent.
- 17. A theorem stating that if two triangles are congruent, then all their corresponding parts are congruent.
