Match the angle pair with the angle relationship that beat represent the pair of angles. a)corresponding angles
b)consecutive exterior angles
c)alternate exterior angles
d)alternate interior angles
e)consecutive interior angles

1.angle9 and angle 16
2.angle3 and angle 5
3.angle 7 and angle 15
4.angle 1 and angle 10
5.angle 2 and angle 11

^places angles(number) with words!! (lettters)

Given: ab ≅ cd and ad ≅ bc prove: abcd is a parallelogram. statements reasons 1. ab ≅ cd; ad ≅ bc 1. given 2. ac ≅ ac 2. reflexive property 3. △adc ≅ △cba 3. ? 4. ∠dac ≅ ∠bca; ∠acd ≅ ∠cab 4. cpctc 5. ∠dac and ∠bca are alt. int. ∠s; ∠acd and ∠cab are alt. int. ∠s 5. definition of alternate interior angles 6. ab ∥ cd; ad ∥ bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3? triangle angle sum theorem sas congruency theorem sss congruency theorem cpctc