Factor this polynomial using the gcf: 21x - 14 x(21 - 14) 7(3x - 1) 21x(1 - 14) 7(3x - 2)

1. are the triangles similar and if so why? what is the value of x? show your work.

Worth 30 points! in this diagram, both polygons are regular. what is the value, in degrees, of the sum of the measures of angles abc and abd?

Which rule describes the composition of transformations that maps ajkl to aj"k"l"? ro. 900 o to, -2(x, y) to, -20 ro, 900(x, y) ro, 9000 t-2. o(x, y) t-2, 00 ro, 900(x, y)