Britton rotated trapezoid ABCD 180 degrees on the coordinate pleane. If angle B is 20 degrees and angle D is 90 degrees, what is the degree measurement of angle B'?

20 points for the answer. this is for real , don't put random ! a rectangle has a length of 4 centimeters and a width of 7 centimeters. what is the effect on the perimeter when the dimensions are multiplied by 5? the perimeter is increased by a factor of 5. the perimeter is increased by a factor of 20. the perimeter is increased by a factor of 25. the perimeter is increased by a factor of 100.