Figure one and figure 2 are similar quadrilaterals

Question

Figure one
2 cm 5cm 4cm dcm
Figure 2
4cm 10 cm 8cm acm
Which proposition must be true.

Answer 1

The corresponding sides of similar quadrilaterals are in proportion. Therefore, the following proposition must be true for the two figures provided:

2/4 = 5/10 = 4/8 = d/a = 1/2