Question

Why does AC=BC=BD? for the rest of this problem assume AD=1.
I don't know where to start. I will set a photo of the measurements.

Answer 1

<C at left 72, at right 36,
<B is 36,
<D at left is 72, at right is 108,
<A 36

But, why does AC=BC=BD?

Answer 2

sorry, i had to go...
so u said angle A and B are congruent(equal)
thats right, what are the opposite sides of these two angles ? (in triangle ABC only)

Answer 3

haha its okay, I had to take care of stuff too.

Answer 4

would the opposite sides be.... a 2? since between <D and <A = 1?

Answer 5

whats a2?
i'll draw the triangle separately for you:

now can u identify opposite sides ?