18 pieces Polydron - yellow triangles (equilateral)

15 pieces Polydron - green triangles (right-angled)

25 pieces Polydron - blue triangles (Isosceles)

14 pieces Polydron - red triangles (right-angled)

12 pieces Polydron - blue triangles (right-angled)

Isotiles by Invicta (New set of 20 isosceles triangles for exploring geometry!)

Original Polydron Midi Box Educational Toy 20-5002R STEM Maths 80 Piece Set

New Math Learning Center 100 PDT Polydron Equilateral Triangles