What is 100/225 in it's lowest form?

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

Vinay constructed this spinner based on the population of teachers at his school according to vinays model what is the probability that he will have a male history teacher two years in a row