If two or more polygons are congruent, which statement must be true about the polygons

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.

Which best explains why this triangle is or is not a right triangle ?

Why is x= 4 a solution to the proportion 14/x 56/1 6