Geometry Terms

2. A straight line extending from the center of a circle or sphere to the circumference or surface.
5. A polygon with 5 sides and 5 angles.
6. A closed three-dimensional figure.
8. Have the same measure and corresponding sides are in proportion.
11. A polygon with exactly four sides.
12. A ____ is a flat, two-dimensional object.
14. When three or more lines meet at a single point.
16. If angle A is an acute angle in a right triangle.
18. The point where the three altitudes meet, making them concurrent.
22. An ______ of a triangle is a line segment connecting a vertex to the line containing the opposite side and perpendicular to that side.
25. Part of a line between two points.
27. A two-dimensional representation of a three-dimensional object.
28. A quadrilateral with four right angles
30. A regular quadrilateral.
31. A location in space - a dot on a piece of paper.
32. An _____ is a line segment where two faces intersect.
33. The intersection point of two sides of a plane figure.
34. It is made of straight line segments.
36. A ____ is a quadrilateral that has two pairs of adjacent sides congruent (the same length).

1. The segment connecting two consecutive midpoints of a triangle.
3. Means the "if" and "then" parts of a sentence are switched.
4. A "straight" line that begins at a certain point and extends infinitely in one direction.
6. A quadrilateral having both pairs of opposite sides parallel to each other.
7. A rectangle having all four sides of equal length.
9. The ________ in a right triangle is the side of the triangle that is opposite to the right angle.
10. This point is the same distance from each of the three vertices of the triangles.
13. All corresponding lengths are the same, and if all corresponding angles have the same measure.
15. The line segment between two points on a given curve.
17. The set of all points in a plane that are equidistant from a given point in the plane, which is the center of the ____.
19. A quadrilateral that has all four sides congruent.
20. The length of the side opposite to angle A divided by the length of the hypotenuse of the triangle.
21. A ______ is a segment connecting any vertex of a triangle to the midpoint of the opposite side.
23. The point where the three angle bisectors meet.
24. A circle's ______ is a segment that passes through the center and has its endpoints on the circle.
26. The intersection of a graph with one of the axes.
29. The _______ of a triangle is the point where the three medians meet.
35. Connects two points via the shortest path and continues indefinitely (forever) in both directions.