if 2 X degree is the exterior angle of triangle and X degree and 45 degree are opposite interior angles find the value of x degree

What properties allow transformation to be used as a problem solving tool

1. are the corresponding angles congruent 2. find the ratios of the corresponding sides 3. is triangle jkl congruent to triangle rst? if so what is the scale factor

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints