Given: ∠1 ≅ ∠9

which lines must be parallel?
a) r and s
b) p and q
c) p and r
d) q and s

Option A is true

Step-by-step explanation:

Given: ∠1 ≅ ∠9

To Find : Which lines must be parallel?

Solution :

∠1 and ∠9 are corresponding angles

When the traversal cut the the two lines and forms the angles and if these angles are equal so, these two lines must be parallel

So, r is parallel to s

Hence Option A is true .

c. prove the lengths are the same.

step-by-step explanation:

you need to prove the segments are congruent. congruent segments have the same length. find the lengths of the segments using the distance formula, and compare them.

answer: c. prove the lengths are the same.

1/4 and 8/3 because:

the reciprocal if 4 is 1/4 because 4 is used as 4/1 and the opposite of that is 1/4. the opposite of 3/8 is 8/3 so that is the answer.