OG P61-11

11. In 三角形PQR, if PQ= x+2, and PR=y, which of the three agles of 角PRQ has the greatest degree measure?

(1) y=x+2

(2) x=2

answer: A

Please help and explain, thanks!!

你题目打错了。这是OG31。原题是：

11. In 三角形PQR, if PQ= x, QR＝x+2, and PR=y, which of the three angles of 三角形PQR has the greatest degree measure?

(1) y=x+3

(2) x=2

（1） 可知Y边最大，所以相对应的角最大。