In the figure shown, abc is a right triangle with side lengths a, b, and c, and cd is an altitude to side ab. the side lengths of triangle acd are b, h, and r, and the side lengths of triangle cbd are a, s, and h.

which proportions are true?

a) c/a = a/s and c/b = b/r

b) c/a = s/a and c/b = r/b

c) c/b = a/s and c/a = b/r

d) c/b = s/a and c/a = r/b

A

Step-by-step explanation:

In the figure shown, ABC is a right triangle with side lengths a, b, and c, and CD is an altitude to side AB. This altitude divides the triangle into two right triangles ADC and BDC. In these triangles,

So,

1. From the similarity you have

2. From the similarity you have

Hence, option A is true

i need a picture

step-by-step explanation:

just sum

10 + 10 = 20