The missing sides are
1. MH = 31.62
2. IK = 24.52
3. HI = 49.04
4. MG = 31.62
How to find the missing sides
The missing sides can be sought using Pythagoras theorem given by the the formula
hypotenuse² = opposite² + adjacent²
Solving for MH
MH² = MJ² + JH²
where JH = JG = 31
MH² = 14² + 31² = 169 + 961 = 1130
MH = √1130
MH = 31.62
Solving for IK = KH
IK² = MH² - MK²
IK² = (√1130)² - 23² = 1130 - 529 = 601
IK = √601
IK = 24.52
Solving for HI
= IK + KH
= 24.52 + 24.52
= 49.04
Solving for MG
MG = MH = 31.62