2
1 rhombus 4-5 triangles
14
6
Two of them because there are 360 degrees in a trapezoid and 180 degrees in a triangle and so it follows that 360/180 = 2
A minimum of 2 triangles are needed, but you can also make a rectangle with 3 or more triangles.
1 rhombus 4-5 triangles
14
A trapezoid can be divided into multiple triangles depending on how it is dissected. At minimum, a trapezoid will contain two triangles - the larger triangle formed by the longer base and the height of the trapezoid, and the smaller triangle formed by the shorter base and the height. However, additional triangles can be formed by drawing diagonals within the trapezoid, increasing the total number of triangles.
6
0 (trapezoid, kite, parallelogram) - 4 (rectangle)
6
Two of them because there are 360 degrees in a trapezoid and 180 degrees in a triangle and so it follows that 360/180 = 2
5 or 6 Depending on what shape you are thinking of
2 rhombuses and 2 triangles
A minimum of 2 triangles are needed, but you can also make a rectangle with 3 or more triangles.
10 triangles
There are 6 triangles in an octagon