count how much spaces from one point on the end of the line to the other.
Line VU has 9 units Line VW has 12 units Line UW has:
a² + b² = c² 9² + 12² = c² 81 + 144 = c² c² = 225 √c² = √225 c = 15 Line UW has: 15 units Now add all the units together to get the perimeter: 9 + 12 + 15 = 21 + 15 = 36
