Math Vocabulary

4. a parallelogram with opposite equal acute angles, opposite equal obtuse angles, and four equal sides.
7. the base angles are equal and therefore the left and right side lengths are also equal
8. non-adjacent angles
14. identical in form; coinciding exactly when superimposed.
16. a four-sided plane rectilinear figure with opposite sides parallel.
17. a regular polygon is a polygon that is equiangular and equilateral.
19. convex quadrilateral with at least one pair of parallel sides
20. a ten-sided polygon or 10-gon.
22. a side of a polygon or a face of a polyhedron
23. divide into two equal parts.
24. the angle between a side of a rectilinear figure and an adjacent side extended outward.
26. a segment that connects the midpoints of two sides of a triangle.
28. the angle between adjacent sides of a rectilinear figure.
30. Two angles whose angles measures add up to 180 degrees.
31. one of the sides of a triangle
32. a quadrilateral whose four sides can be grouped into two pairs of equal-length sides that are adjacent to each other

1. two straight lines in a plane that do not intersect at any point
2. a straight line joining two opposite corners of a square, rectangle, or other straight-sided shapes.
3. A polygon that does not have all sides equal and all angles equal.
5. the middle point of a line segment.
6. a four-sided plane rectilinear figure with opposite sides parallel.
9. a polygon in Euclidean plane geometry with four edges and four vertices
10. each angular point of a polygon, polyhedron, or other figures.
11. a nine-sided polygon
12. two lines that meet at a right angle.
13. a quadrilateral with four right angles
15. either of the angles of a triangle that have one side in common with the base.
18. the side across from a given angle
21. two sides that have an endpoint in common
25. the pair of angles on one side of the transversal and inside the two lines
27. there are NO "dents" or indentations in it
29. four equal sides and four equal angles.