has perimeter formula

6 triples
GPTKB property

Random triples
Subject Object
gptkb:ARC_Triangle side1 + side2 + side3
gptkb:Tri-Angle a + b + c
gptkb:KRC_Triangle side1 + side2 + side3
gptkb:Triangle a + b + c
gptkb:Katipunan_triangle side1 + side2 + side3
gptkb:Baker_Triangle a + b + c