Question

If BCDE is congruent to OPQR, then DE is congruent to _______.

Answer 1

QR

Reason:

Imagine creating a rectangle with

B———C And O———P
| | | |
D———E Q———R

You can see that line QR is the congruent (the same size) as line DE.

Answer 2

QR

Explanation:

If two shape are congruent, it means they have equal corresponding sides and angles. You can find which ones are corresponding to each other by where the letters are placed in the shapes given name.

For example, given: BCDE & OPQR

BC = OP

CD = PQ

DE = QR

Notice that DE is the 3rd and last letter in BCDE

QR is also the 3rd and last letter of OPQR