Question

ABCD is a rectangle. Given that the measure of BCE = 21 what is the measure of DCE. D is on the left bottom of the rectangle and A is on the left top. ( could show them because I had to crop it. )​

Answer 1

Explanation:

BCE+DCE=90

BCE WHICH IS 21

So, 21+DCE=90

GROUPING OF LIKE TERMS

DCE=90-21

DCE=69