Geometry Terms

4. a transformation that turns a figure over on a line of symmetry
6. a quadrilateral that has only one set of parallel sides
10. lines that intersect to form a right angle
12. a parallelogram that has sides that are all congruent
13. a part of a line that has two distinct endpoints
14. a straight path that continues without end in both directions
18. a polyhedron that has a polygon base and triangular faces
20. a line segment that connects any two points on the circle and passes through the center of the circle
22. a triangle with all angles less than 90 degrees
24. a flat surface that extends without end in all directions
25. a triangle that has three equal sides
28. a triangle that has one 90 degree angle

1. a fixed location in space
2. a polyhedron that has two congruent bases and rectangular faces
3. a triangle that has three unequal sides
4. a transformation that moves a figure around a fixed point
5. a solid figure made of flat surfaces called faces
7. a triangle that has at least two equal sides
8. a transformation that moves a figure in a straight line, changing location but not position
9. lines in the same plane that do not intersect
11. lines that cross each other at a common point
15. a part of a line that has one endpoint and continues without end in one direction
16. figures that hae the same shape but may not be the same size
17. a polygon that has four sides
18. a quadrilateral that has two sets of parallel sides and opposite sides that are congruent
19. the unit used to measure an angle
21. a line segment from the center to a point on a circle
23. an angle that has a measure of 180 degrees
26. a line segment drawn between any two points on a circle
27. a triangle that has one angle greater than 90 degrees