Geometry Terms

5. a flat two dimensional surface that has infinite length
6. a term that describes that if the first element is related to the second element, and the second element is related to the third element, that the first element must be related to the third element
7. angles that have the same measure
8. what do you call each of the opposite angles made by intersecting lines
10. either of two angles whose sum is 180 degrees
11. the attribute assigned to a proposition in respect of its truth or falsehood

1. a figure or object that is made of exactly similar parts on each side of an axis
2. a term that relates to itself
3. either of two angles whose sum is 90 degrees
4. segments with the same measure
9. two objects that are in the same plane