13. What are the coordinates of the midpoint of a segment with endpoints ( − 1 , 2 ) open negative 1 comma 2 close  and (5, 6)?
    1. (2, 4)
    2. (4, 8)
    3. (6, 4)
    4. (3, 4)
14. Which of the following angle relationships can you use to prove that two lines are parallel?
    6. supplementary corresponding angles
    7. congruent alternate interior angles
    8. congruent vertical angles
    9. congruent same-side interior angles

15. In Δ ABC , ∠ ABC cap delta  and ∠ ADB angle  are right angles. Which of the following is NOT a true statement?

    

    1. ∠ CBD ≅ ∠ DAB angle
    2. ∠ ABD ≅ ∠ BCD angle
    3. ∠ DBC angle  and ∠ BCD angle  are complementary.
    4. ∠ DAB ≅ ∠ ABD angle
16. What is the measure of any exterior angle of an equiangular triangle?
    6. 30
    7. 60
    8. 90
    9. 120

GRIDDED RESPONSE

17. Two angles of an isosceles triangle have measures 54.5 and 71. What is the measure of the third angle?
18. In the coordinate plane, A B ↔ modified eh b with left right arrow above  contains ( − 2 , − 4 ) open negative 2 comma negative 4 close  and (6, 8). C D ↔ modified c d with left right arrow above  contains (6, y) and (12, 10). For what value of y are the lines parallel?
19. A circular wading pool has a diameter of 10 ft. What is the circumference of the wading pool in feet? Use 3.14 for π . pi .
20. What is the measure of the complement of a 56 ° 56 degrees  angle?

21. A new athletic field is being constructed, as shown below. The given coordinates are in terms of yards. What is the area of the field in square yards?

    

Short Response

22. Is your friend's argument for the following situation valid? Explain.

    Given: If you buy a one-year membership at the gym, then you get one month free. You got a free month at the gym.

    Your friend's conclusion: You bought a one-year membership.

23. Draw M N ¯ . m n bar , .  Then construct the perpendicular bisector of M N ¯ . m n bar , .

Extended Response

24. C D ¯ c d bar  has endpoints C(5, 7) and D ( 10 , − 5 ) . d open 10 comma negative 5 close .  What are the coordinates of the midpoint of C D ¯ ? c d bar , question mark  What is CD? Show your work.

25. Examples and nonexamples of bleebles are shown.

    
    Image Long Description

    1. Is the figure below a bleeble? Explain your reasoning.

    2. What is a definition for bleeble?

       

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