Geometry Vocabulary

2. Two lines that intersect at right angles
4. two sides that share a common vertex
5. Congruent sides or segments have the exact same length
7. A polygon in which all sides are the same length and all angles have the same measure
9. A triangle with three acute angles
10. A polygon is convex if there are no dents or indentations in it
12. a quadrilateral with at least on pair of parallel sides
17. a triangle with all three sides equal in length, each angle measures 60 degrees
18. the figure formed by two rays, called the sides of an angle, sharing a common endpoint (the vertex of the angle)

1. A polygon with an angle measuring more than 180 degrees;look like they are collapsed or have on more angles dented in
3. A two dimensional figure formed by three or more line segments that meet only at their endpoints to make a closed path;sides may not cross one another
6. A part of a line that begins at a particular point and extends forever in one direction
7. A traingke with a right angle
8. a triangle with two sides equal in length
11. two angles that are next to each other
13. a 90 degree angle
14. A triangle with one obtuse angle
15. A triangle with no sides equal in length
16. A 180 degree angle
19. A two dimensional object that has no end points and continues on forever in both directions