Triangles & QuadrilateralsVersión en línea Identify types of triangles & quadrilaterals por Rachel Petersheim 1 Quadrilateral (generic) 2 Rhombus 3 Rectangle 4 Square 5 Trapezoid 6 Acute triangle (empty) 7 Right triangle (empty) 8 Obtuse triangle (empty) 9 Scalene triangle (solid) 10 Isosceles triangle (solid) 11 Equilateral triangle (solid) 12 Parallelogram