Treble Crochet Triangle
1st row: make amigurumi ring, 3 chain sts increase, after that, 4 double crochets in the ring, 2 chain sts, 5 double crochets and 2 chain sts. After that, 5 double crochets and 2 chain sts, tighten the loop and connect the row with slip st, insert the crochet hook in the upper st increase;
2nd row: 3 chain sts increase, 1 double crochet in every crochet of the previous row (= 4 double crochets), 2 double crochets in the arch of chain sts, 2 double crochets, 2 chain sts and 2 double crochets, double crochet in every double crochet of the previous row (= 5 double crochets);
2 double crochets in the arch, 2 chain sts, 2 double crochets, 5 double crochets, 2 double crochets in the arch, 2 chain sts, 2 double crochets, slip st in the upper chain st increase;
3rd row: 3 chain sts increase, 1 double crochet in the next 6 sts, 2 double crochets in the arch, 2 chain sts, 2 double crochets, * 1 double crochet in every double crochet of the previous row (= 9 double crochets), 2 double crochets in the arch, 2 chain sts, 2 double crochets*; repeat from * to * once, 1 double crochet in the double crochet of the previous row (= 2 double crochets), slip st in the upper chain st increase.
Repeat 1st-3rd rows, increase 4 double crochets for eacg side of the triangle.