Question

Galaxy

請問有人可以解釋為什麼第一個圖形ABxAC=ADxAE=ATxAT嗎 謝謝

center O, point D is interior to the
2, and AB = 6, then find the radi
=
E
AB (AC) = ADI AE) = ATA
abecd
ACAB ~ ACDE (AA similar)
CA
he
x
-
ab=cd