What's In 1-5, What I Have Learned 1-5, Assessment 1-5, pages 19, 21, 22. Assessment Multiple choice. Write the letter of your answer on a separate sheet of paper.

1. All the statements below prove parallelism between two lines, EXCEPT: A. Alternate Interior Angles are congruent
B. Same-side Exterior Angles are supplementary
C. Corresponding Angles are equal
D. Adjacent Angles are congruent

2. In the figure xiy, which of the following is NOT true?
A. 21, 22, 23, and 24 are right angles. B. 21 and 22 are both complementary angles.
C. 21 and 22 are linear pair.
D. 21 and 24 are supplementary angles.

3. All of the following theorems show that two lines are perpendicular, EXCEPT:
A. If two lines are perpendicular to each other, then the pair of adjacent angle they form are congruent
B. If two lines intersect to form a pair of congruent adjacent angles, then the line are perpendicular.
C. In a given plane, through a given point, there is exactly one-line perpendicula to a given line.
D. None of the above.

4. Lines a and b are parallel in the figure below. Find the value of x.
A. 70° 100⁰
B. 80⁰
C. 100⁰
D. 110°

5. Which of the following is true if 21 and 23 are linear pair?
A. 21 and 24 are complementary
B. 22 and 23 are complementary
C. a and b are parallel b
D. a and b are perpendicular

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