# Geometry

##### Across
1. 2. Ten sided shape.
2. 5. In a rectangle, diagonals are _____.
3. 7. _____ angles are side by side.
4. 9. Perimeter of a circle.
5. 10. A many sided shape with straight edges.
6. 11. An angle that is 360° is known as a revolution, or _____.
7. 14. How many lines of symmetry does an equilateral triangle have?
8. 15. In an _____ triangle, all ides are equal.
9. 16. Co-interior angles are _____
10. 21. An _____ triangle has one axis of symmetry.
11. 23. A _____ is where two or more edges meet.
12. 24. _____ angles are between 180° and 360°.
##### Down
1. 1. A five sided shape.
2. 3. Angle sum of a _____ is 180°.
3. 4. A _____ polygon has all sides equal in length and angles equal in size.
4. 6. A line that starts at a point but continues with no end.
5. 8. A straight line that cuts through two or more parallel lines.
6. 9. Angles that add up to 90°.
7. 12. A rectangle has equal _____ that bisect each other.
8. 13. A shape with two unequal parallel sides.
9. 17. An _____ angle of a triangle is formed when one side is extended.
10. 18. Opposite sides of a _____ are parallel, and opposite angles are equal.
11. 19. A line that divides an angle in half.
12. 20. A shape with two pairs of equal adjacent angles.
13. 22. An acute-angles triangle has all angles _____ than 90°.
14. 25. True or false: a rectangle is a rhombus.