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See explanation.

Step-by-step explanation:

1) Let’s use process of elimination to find our answer.

a) These two angles are vertical to each other, meaning they are congruent. So, ∠1 and ∠3 are not supplementary angles.

b) ∠2 and ∠6 are congruent, since they both are on the same place as each other, which makes them corresponding angles. So, ∠2 and ∠6 are not supplementary angles.

c) ∠4 and ∠6 are alternate interior angles, meaning they are congruent. So, they are not supplementary angles.

d) ∠7 and ∠8 share the same straight line and the same median, meaning they are supplementary.

D is the correct answer.

2) Again, process of elimination.

a) ∠1 and ∠3 are vertical angles, not alternate exterior.

b) ∠2 and ∠6 are congruent angles since they are corresponding, but not alternate exterior.

c) ∠4 and ∠6 are alternate interior angles, not alternate exterior angles.

d) ∠7 and ∠1 are alternate exterior angles.

D is the correct answer.

3) Process of elimination.

a) ∠1 and ∠4 are supplementary angles, meaning they aren’t congruent.

b) ∠4 and ∠5 are again, supplementary. So, they aren’t congruent.

c) ∠1 and ∠5 are congruent angles since they are corresponding angles.

d) ∠7 and ∠8 both share the same straight line and median, so they are supplementary, not congruent.

C is the correct answer.

4)  

a) ∠4 and ∠8 are corresponding angles since they are both in the exact same place as each other.

b) ∠4 and ∠6 are alternate interior angles, not corresponding angles.

c) ∠1 and ∠2 both share the same straight line and the same median, meaning they are supplementary. So, they are not corresponding angles.

d) ∠2 and ∠8 are alternate exterior angles, and not corresponding.

A is the correct answer.

5) ∠1 and ∠2 are supplementary angles since they share the same straight line and median. So, their sum is 180°.

If m∠2=70°,

m∠1=110°

C is the correct answer.

6) ∠2 and ∠4 are vertical angles, meaning they are congruent.

If m∠2=70°,

m∠4=70°.

A is the correct answer.

7) ∠2 and ∠6 are corresponding angles, meaning they are congruent.

If m∠2=70°

m∠6=70°.

D is the correct answer.

8) ∠2 and ∠3 both share the same straight line and median, meaning they are supplementary and have a sum of 180°.

If m∠2=70°,

m∠3=110°

B is the correct answer.

9) ∠6 and ∠7 are supplementary angles, meaning they share the same straight line and median. So, their sum is 180°.

If m∠6=106°,

m∠7=74°

B is the correct answer.

10) ∠6 and ∠1 are both exterior angles, but they are both on the same straight lines. So, their sum is 180°.

If m∠6=106°,

m∠1=74°

B is the correct answer.

2.83941151 would be the answer you're looking for! : )

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.