A net that folds into a dodecahedron is made up of pentagons. If you decompose each pentagon into one triangle and one trapezoid, how many triangles and how many trapezoids are there?
A dodecahedron consists of 12 pentagons. Therefore, the net that folds into a dodecahedron consists of 12 pentagons.
If each pentagon is decomposed into one triangle and one trapezoid, then for each pentagon, there will be 1 triangle and 1 trapezoid.
So, if there are 12 pentagons in total, there will be 12 triangles and 12 trapezoids.