To prove a polygon is a rectangle, which of the properties listed must be included in the proof? A. all side lengths are equal
B. diagonals are perpendicular bisectors
C. opposite pairs of angles are supplementary
D. all interior angles are right angles​

step-by-step explanation :

we know that

the measurement of the outer angle is the semi-difference of the arcs which comprises

in this problem

m< xzy is the outer angle

substitute the values

the measure of angle xoy is equal to

> by central angle

substitute the value

answer:   expression= p+p*d%

price reduction + sale price = $625

sale price: $p+$p*d%

where d% is the percentage of discount

step-by-step explanation:

original price = p

price went down by $150 price reduction $p*d%

sale price= $ 475

therefore the price before sale is: $625

and the expression that shows the price before sale is: p+p*d%

the answer to your question is c.)   volcanoes built the mountains and earthquakes tore them down.

step-by-step explanation:

it is a horizontal line.