CK-12 Geometry - Second Edition

http://www.ck12.org Chapter 2. Reasoning and Proof

11. List two pairs of vertical angles.


12. List all the pairs of congruent segments.


13. List two linear pairs that do not haveHas the vertex.


14. List a right angle.


15. List two pairs of adjacent angles that are NOT linear pairs.


16. What is the perpendicular bisector ofAE?


17. List two bisectors ofMP.


18. List a pair of complementary angles.


19. IfGCis an angle bisector of^6 AGE, what two angles are congruent?


20. Fill in the blanks for the proof below. Given: Picture above and^6 ACH∼=^6 ECHProve: CHis the angle
    bisector of^6 ACE

TABLE2.24:

Statement Reason

1.^6 ACH∼=^6 ECH
CHis on the interior of^6 ACE
2.m^6 ACH=m^6 ECH
3. Angle Addition Postulate
4. Substitution
5.m^6 ACE= 2 m^6 ACH
6. Division PoE
7.

For questions 21-25, find the measure of the lettered angles in the picture below.

21.a

22.b

23.c

24.d

25.e(hint:eis complementary tob)

For questions 26-35, find the measure of the lettered angles in the picture below.Hint: Recall the sum of the three
angles in a triangle is 180 ◦.