Geometry words

3. Pairs of opposite non-adjacent angles formed by two intersecting straight lines.
5. a pair of angles on the outer side of each two lines intersected by a transversal situated on opposite sides of the transversal
7. A polygon (3 sided shape) with all three equal sides.
9. a angle that is 180˚
11. A triangle with a right interior angles (90˚)
13. A four sided shape with two different sets of equal sides.
15. A quadrilateral with all four sides equal length which makes it a (equilateral parallelogram)
16. A four sided shape with equal sides that are parallel.
17. a pair of angles on opposite sides of a transversal line between two intersecting lines
19. A angle that shares the same common vertex

1. A triangle with each angle acute (less than 90˚)
2. A quadrilateral with 2 pairs of adjacent equal length sides
4. a shape with all sides parallel.
6. A triangle with a obtuse interior angles (more than 180˚)
8. A line that passes through two or more other lines at distinct different points
10. Pairs of angles in matching corners when a straight line intersects two other lines
12. A shape with four equal sides that are parallel.
14. A triangle with three different size sides and different angles.
18. A closed two dimensional polygon with three straight sides three vertices and three interior angles.