Question

In the figure, AP=PC=6cm and PD=2cm. DB is a diameter of the circle.
(a) Find the radius of the circle.
(b) Find the perimeter of triangle ABC.

Answer 1

First show triangle APB and triangle DPC are similar

Answer 2

can u?

Answer 3

triangle ABC is an isosceles triangle.

Answer 4

yeah

Answer 5

can u show triangle APB and triangle DPC are similar ???

Answer 6

since my teacher haven't teach us about angle in the same segment, therefore I cannot use angle in the same segment in this question.

Answer 7

but how did u know it?

Answer 8

know what?

Answer 9

U know the theorem

Answer 10

I know the theorem but I cannot use it in this question since this question cannot cover this theorem, the instruction said.

Answer 11

@sirm3d would you kindly help me if you are free ?