Crossword Puzzle

2. Triangles are congruent if any two angles and their included side are equal in both triangles.
3. The three altitudes intersect in a single point.
4. Three or more lines in a plane or higher-dimensional space are said to beconcurrent if they intersect at a single point.
11. A triangle that has three unequal sides.
12. A transformation in which a geometric figure is reflected across a line.
14. The enclosing boundary of a curved geometric figure, especially a circle.
16. The middle.
17. All the angles are equal.
18. A triangle in which one of the angles is an obtuse angle.
20. Three or more lines in a plane or higher-dimensional space are said to beconcurrent if they intersect at a single point.
22. A point where two lines or line segments meet or intersect.
23. A transformation of the plane that slides every point of a figure the same distance in the same direction.
24. A segment from the vertex of a triangle to the opposite side and it must be perpendicular to that segment.

1. A transformation in which a plane figure turns around a fixed center point.
2. A triangle that has two sides of equal length.
5. A triangle with all three sides of equal length.
6. The angle between two sides of a triangle.
7. A line segment that is both perpendicular to a side of a triangle and passes through its midpoint.
8. The angle between a side of a rectilinear figure and an adjacent side extended outward.
9. The center of mass of a geometric object of uniform density.
10. angles are less than right angles.
13. The center of the incircle of a triangle or other figure.
15. The point where three or more lines intersect.
19. The angle that is formed by the base and one leg in an isosceles triangle.
21. A triangle with a right angle.