Answer Key Yes 1 = 37° since it's an alternate exterior angle 48° to 5 and alternate exterior angles are 27° congruent 18° 2 = 143° since it's supplemental to 1 Yes 3 = 37° since it's vertical to ∠5 65° 4 = 143° since it's supplemental to and 5 ∠3 128° or since it corresponds to ∠2 108° 6 = 143° since it's vertical to or since it's ∠4 Yes an alternate interior angle to ∠2 Complement = 22°, Supplement = 112° = 37° since it's vertical to or since it's ∠7 ∠1 Multiple answers for the reasons. Some an alternate interior angle to ∠3 examples: since it's vertical to or an ∠8=143° ∠2 2 = 65° since it's vertical to a 65° angle and alternate exterior angle to or corresponds ∠4 vertical angles are congruent to ∠6 3 = 115° since it's supplemental to 2 and to No; not congruent the 65° angle 64° 4 = 115° since it's vertical to 3 or 72° supplemental to 2 81° Multiple answers for the reasons. Some No, they are supplementary examples: 83° 70° 171°
Answer Key Yes 48° 27° 18° Yes 65° 128° 108° Yes Complement = 22°, Supplement = 112° Multiple answers for the reasons. Some examples: 2 = 65° since it's vertical to a 65° angle and vertical angles are congruent 3 = 115° since it's supplemental to 2 and to the 65° angle 4 = 115° since it's vertical to 3 or supplemental to 2 Multiple answers for the reasons. Some examples: 1 = 37° since it's an alternate exterior angle to 5 and alternate exterior angles are congruent 2 = 143° since it's supplemental to 1 3 = 37° since it's vertical to ∠5 4 = 143° since it's supplemental to ∠3 and 5 or since it corresponds to ∠2 6 = 143° since it's vertical to ∠4 or since it's an alternate interior angle to ∠2 ∠7 = 37° since it's vertical to ∠1 or since it's an alternate interior angle to ∠3 ∠8=143° since it's vertical to ∠2 or an alternate exterior angle to ∠4 or corresponds to ∠6 No; not congruent 64° 72° 81° No, they are supplementary 83° 70° 171°
2d-geometry-classwork-homework-2-2015-03-25.docx