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Triangles PRQ and MRN are not similar.

Step-by-step explanation:

The two triangles are PRQ and MRN.

It is given that both the triangles have ∠R = 90° as the common angle.

Now, we check whether the ratios of the sides are equal or not.

i.e. To check if

Since, we have the lengths,

PM = 8, MR = 10. Thus, PR = 8 + 10 = 18

QN = 14, NR = 7. Thus, QR = 14 + 7 = 21

So, we get,

implies

implies 1.8 = 3, which is not true.

So, the ratio of the sides are not equal.

Hence, we get that the triangle PRQ and MRN are not similar.

(23*2)-12=x     x=34

step-by-step explanation: