This is because rotations preserve angles. The angle measures won't change. That's why angle BCD is the same as angle B'C'D'. This applies to any rotation (regardless how much you rotate), any translation, any reflection, and any dilation.

Note: dilations will change the side lengths

5 0

2 years ago

In a parallelogram, explain how opposite sides are congruent

Otrada [13]

There's a theorem that states:
"<span>If a quadrilateral is a parallelogram, </span>it has<span> 2 sets of opposite sides congruent.</span><span>"
</span>
Hope this helps ;)

6 0

3 years ago

What are the excluded values? b = 0 and -10 b = 2 and 5 b = 3 and 7 none of the above

Dominik [7]

b= 2 and 5

is your answer to the above question.

8 0

2 years ago