Question

is $overline{qr}congoverline{pq}$?
p q r
0 200 400 600 800 1,000
yes no

Explanation:

Step1: Calculate length of $\overline{PQ}$

$PQ=600 - 400=200$

Step2: Calculate length of $\overline{QR}$

$QR = 800 - 600=200$

Step3: Compare lengths

Since $PQ = QR=200$, $\overline{QR}\cong\overline{PQ}$

Answer:

yes