Question

Найдите BC,если AC=15,BD=12 и AD=20

Answer 1

Ответ:20

Пошаговое объяснени

Answer 2

To find the value of BC, we can use the property of similar triangles. Since we have triangle ABD and triangle BCD with parallel lines AB and CD, we can set up the following proportion:

(BC / BD) = (AC / AD)

Now, we can plug in the given values:

(BC / 12) = (15 / 20)

Cross-multiply to solve for BC:

BC = (12 * 15) / 20 BC = 180 / 20 BC = 9

Therefore, BC is equal to 9.