given: ∠1 ≅ ∠2
prove: a ∥ b

what is the missing statement in the proof?

∠1 ≅ ∠4

a ∥ b

∠1 ≅ ∠2

a ⊥ b

One side of a rectangle is 7 feet shorter than seven times the other side. find the length of the shorter side if we also know that the perimeter of the rectangle is 306 feet.

Factor k2 - 17k + 16. a.(k - 2)(k - 8) b.(k - 1)(k + 16) c.(k - 1)(k - 16)

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?