Which polygon will always be irregular? (a) triangle (b) trapezoid (c) square (d) hexagon

Ineed with number 17 i don’t get it at alll

Right ∆abc has coordinates a(-7, 3), b( -7, 10), and c(-1, 3). the triangle is reflected over the x - axis and then reflected again over the y - axis to create ∆a'b'c'. which are the coordinates of vertex a'?

What is the probability that a person's favorite season is fall? write the probability as a fraction. spring - 13% summer - 39% fall - 25% winter - 13% none, i like them all - 10%