Fill in the blank with letter of the word that completes the sentence. A. congruent

B. rays

C. right

D. degrees

E. three

F. endpoint

G. arcs

H. vertex

I. segments

J. ruler

K. 360º

L. obtuse

M. protractor

N. lines

O. 180º

P. acute

1. The sides of an angle are . (1 point)

2. When using three letters to name an angle, the middle letter represents the . (1 point)

3. A(n) is a tool used to measure angles. (1 point)

4. Angles are measured in units of . (1 point)

5. There are methods for naming angles. (1 point)

6. A circle measures . (1 point)

7. A(n) angle measures less than 90o. (1 point)

8. A straight angle measures . (1 point)

9. angles have the same measure. (1 point)

10. are used to show that