Geometry - Area Crossword

1. A closed shape with three sides and angles. Can be isosceles, equilateral, scalene, right, obtuse, or acute.
8. A triangle with all angles less than 90 degrees. The sum of any two angles in this triangle is always greater than 90 degrees.
9. A triangle with one angle that equals 90 degrees and two acute angles. Can only have one angle equal to 90 degrees.
10. A rectangle with all sid s being equal length. All the angles are 90 degrees.
12. A polygon with four sides and angles. Consists of rhombuses, squares, and many more shapes.
14. A triangle with two equal sides. The angles opposite the equal sides are also the same.
18. How long something is. The longest side of a shape.
19. A two-dimensional shape with four sides. Opposite sides are parallel.
20. Two-dimensional shapes made of straight lines and are closed. Can be either regular or irregular.

2. A flat shape where all the sides are the same length. The opposite angles are equal.
3. The measurement of a space. Can also be known as the size of a surface.
4. A triangle with three equal angles. It is always equilateral.
5. A type of triangle with three equal sides and three equal angles. Each angle is 60 degrees.
6. When sides are the exact same size and length. Angles are also considered this if they are the exact same size.
7. A quadrilateral that has opposite sides equal in length. The opposite angles are also parallel.
11. A triangle with three different side lengths. All the angles are different too.
13. The measure of a shape from side to side. In general, this is shorter than the length.
15. A triangle with one angle greater than 90 degrees and two acute angles. Can not have more than one angle greater than 90 degrees.
16. A closed shape that has one curved line and no straight lines. The same distance from the center at any point.
17. A four-sided shape with one pair of opposite equal sides. Can be acute, isosceles, have 3-sides equal, right, or even obtuse.