1. It is a flat surface that extends Infinitely in all directions.
2. An angle with a measure greater than o but less than 90%
3. It is an instrument used to determine the approximate measure of an angle.
4. The geometrie figure suggested by the ceiling of your room
5. A one-dimensional figure with series of collinear points
6. It is a subset of a line with two endpoints.
7. It is the union of two non-collinear rays with a common endpoint, protractor
8. A pair of angles which are both adjacent and supplementary, h. acute angle
9. What is the total measure of a complementary angle?
10. A pair of nonadjacent interior angles on opposite sides of a transversal

a. line segment
b. 90°
c. plane
d. point
e. line
f. 180°
g. protractor
h. acute angle
i. angle
j. line segment
k. linear pair
l. corresponding angles
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