Across
- 1. Triangle A triangle with at least two sides of equal length and two equal angles.
- 4. Having the same size and shape. Congruent figures can be matched exactly when superimposed.
- 7. Lines Lines that intersect to form right angles.
- 8. Triangle A triangle with all sides and angles of different measures.
- 9. A closed, two-dimensional shape with straight sides.
- 11. A three-sided polygon with three angles.
- 12. A set of points in a plane that are all the same distance from a given point called the center.
- 15. Angles Two angles whose measures add up to 90 degrees.
Down
- 2. Angles Two angles whose measures add up to 180 degrees.
- 3. Theorem A formula used in right triangles: a2+b2=c2a^2 + b^2 = c^2a2+b2=c2, where c is the hypotenuse.
- 5. Lines Lines in the same plane that never intersect and are always the same distance apart.
- 6. A four-sided polygon (e.g., square, rectangle, trapezoid).
- 10. A figure formed by two rays with a common endpoint called the vertex.
- 13. Triangle A triangle that contains one 90-degree angle.
- 14. A line that intersects two or more other lines in a plane at different points.
