Pq and rs are two lines that intersect at point t, as shown below:
(pic below)

which fact is used to prove that angle ptr is always equal to angle stq?

a) lines pq and rs have a fixed length.
b) lines pq and rs intersect at right angles.
c) if two angles are equal to the same measure, then the angles are congruent.
d) if two angles are equal to the same measure, then the angles are supplementary

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.

Which strategy is used by public health to reduce the incidence of food poisoning?

The dash figure is a dilation if the original figure. find the scale factor. classify the dilation as an enlargement or a reduction