1. DOWN ACROSS Unit 1 Vocabulary Review2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
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1. A ______ is a one-dimensional figure that is infinitely long.
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3. The point that divides a given segment into two smaller congruent segments.
2. A _______ is a piece of a line.
5. _______ angles measure between 90 and 180 degrees.
4. The simplest figure in geometry; this figure has no dimension and represents one position in space.
6. ________ points lie on the same line.
7. A ________ Pair consists of two adjacent, supplementary angles.
8. The tool used to measure angles.
11. The set of all points.
9. The measures of two __________ angles sum to 90.
12. ________ Angles are formed by two intersecting lines. They are the angles that are across from one another.
10. A Segment __________ is a segment, ray, line, or plane that intersects a given segment at its midpoint.
13. __________ angles share a side and vertex, but do not overlap.
15. ________ angles measure between 0 and 90 degrees.
14. Figures that have the same size and shape are called _________.
16. ________ points lie on the same plane.
17. ________ angles measure exactly 90 degrees.
17. A ______ has one endpoint and extends in one direction forever.
18. The measures of two _____________ angles sum to 180.
19. A _______ is the set of points that creates a flat surface.
20. _______ angles measure exactly 180 degrees.