Across
- 3. Triangle with two congruent sides.
- 4. When two lines cross so that the angle of their intersection is 90 degrees.
- 6. The measure of an exterior angle of a triangle is equal to the sum of two remote interior angles.
- 9. Two lines that never cross because they go in the same direction.
- 12. An angle that measures 90 degrees.
- 14. When two or more angles add up to 180 degrees.
- 15. Triangle where no sides are congruent.
- 16. Angles that are opposite one another at the vertex when two straight lines intersecting.
- 17. Angles which occupy the same relative position at each intersection where a straight line crosses two others. If the two lines are parallel, the corresponding angles are equal.
- 18. Angles formed when a transversal intersects two parallel lines. They lie outside the two parallel lines but on either side of the transversal.
- 20. A line that passes through two lines in the same plane at two distinct points.
- 21. This statement says that a triangle has three angles that add up to 180 degrees.
Down
- 1. Angles formed when a transversal intersects two parallel lines. They lie on the inner side of the parallel lines but on the opposite sides of the transversal.
- 2. When two or more angles add up to 90 degrees.
- 5. An angle that measures more than 90 degrees.
- 7. Triangle where all sides are congruent.
- 8. A quadrilateral that has congruent opposite sides and congruent opposite angles. The pair of sides that make the shape are parallel.
- 10. When two or more lines, figures, and angles are exactly the same in measurement.
- 11. Line that splits another line segment exactly in two and creates a 90 degree angle at the intersection.
- 13. An angle that measures between 0 and 90 degrees.
- 19. An angle that measures exactly 180 degrees.
- 22. Middle point on a line that splits it exactly in two.