13.) ∠2 = 70° 16.) ∠1 = 110°
14.) ∠5 = 110° 17.) ∠8 = 110°
15.) ∠6 = 70° 18.) ∠3 = 110°
13.) ∠4 and ∠2 are vertical angle, it means they are congruent. If m∠4 = 70°, m∠2 will also be 70°
∠4 ≅ ∠2
14.) ∠2 and ∠5 are supplementary angles, that means if they we're added they sum will be 180°
Solution:
180° - 70° = 110°
15.) ∠5 and ∠6 are same side interior angles, it means they are not congruent and their sum will be 180°
180° - 110° = 70°
16.) ∠6 and ∠1 are supplementary angles, it means they are added their sum will be 180°
180° - 70 = 110°
17.) ∠1 and ∠8 are vertical angles, so their must be congruent,. If m∠1 = 110°, m∠8 = 110°
∠1 ≅ ∠8
18.) ∠8 and ∠3 are alternate exterior angles, that means they are congruent. If If m∠8 = 110°, m∠3 = 110°
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Answers & Comments
✎Angles
13.) ∠2 = 70° 16.) ∠1 = 110°
14.) ∠5 = 110° 17.) ∠8 = 110°
15.) ∠6 = 70° 18.) ∠3 = 110°
13.) ∠4 and ∠2 are vertical angle, it means they are congruent. If m∠4 = 70°, m∠2 will also be 70°
∠4 ≅ ∠2
14.) ∠2 and ∠5 are supplementary angles, that means if they we're added they sum will be 180°
Solution:
180° - 70° = 110°
15.) ∠5 and ∠6 are same side interior angles, it means they are not congruent and their sum will be 180°
Solution:
180° - 110° = 70°
16.) ∠6 and ∠1 are supplementary angles, it means they are added their sum will be 180°
Solution:
180° - 70 = 110°
17.) ∠1 and ∠8 are vertical angles, so their must be congruent,. If m∠1 = 110°, m∠8 = 110°
∠1 ≅ ∠8
18.) ∠8 and ∠3 are alternate exterior angles, that means they are congruent. If If m∠8 = 110°, m∠3 = 110°
∠1 ≅ ∠8