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(i)KO = OM = NL = ON
KO + ON = Length of diagonal
KO + ON = 4y + 6 + 3y + 11 = 7y + 17
Length of diagonal = 7y + 17
ii) Triangle KON is an isosceles triangle.
Therefore, angle NKM = angle KNO = 32 degrees
We know sum of triangle = 180 degrees
32 + 32 + KON = 180
64 + KON = 180
Angle KON = 116 degrees
If angle KNO = 32 degrees, angle MNO = 90 - 32 = 58 degrees
Triangle MON is an isosceles triangle.
Here, angle MNO = angle NMO = angle KMN
Therefore angle KMN = 58 degrees
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