Geometry Vocabulary

3. A part of a line with one endpoint and continues without end in one direction.
4. Two congruent angles across from one another at the intersection of two lines are called ___.
6. Two lines that intersect to form right angles are ___.
10. Points on the same line are said to be ___.
12. A polygon with eight sides and eight angles.
13. Coplanar lines that never intersect.
14. An angle that measures greater than 0 degrees and less than 90 degrees.
15. A parallelogram with four congruent sides and four right angles.
18. A polygon with five sides and five angles.
19. A type of triangle that has two congruent sides
21. A type of triangle that has all congruent sides
24. A polygon with three sides and three angles.
25. The distance around a figure.
26. A polygon with six sides and six angles.
27. The space taken up by a flat object
28. Two angles that add to 90 degrees are said to be __.

1. A polygon with four sides and four angles.
2. A quadrilateral whose opposite sides are parallel and congruent.
5. The point that bisects a line segment
7. Has no size but indicates location in space.
8. An angle that measures greater than 90 degrees and less than 180 degrees.
9. A part of a line between two endpoints (two words).
11. A parallelogram with opposite sides that are congruent and with four right angles.
16. An angle that forms a square corner and has a measure of 90 degrees.
17. Two angles that add to 180 degrees are said to be ___.
20. Having the EXACT same size and shape.
22. The point at either end of a line segment
23. A straight path of infinite points that continues without end in both directions