Question

Find AB if BC = 3, BD = 5, and AD = 5.

Answer 1

Is there a figure?

Answer 2

Is it a straight line possibly?

Answer 3

You can post a picture of the problem, or use the draw tool to draw it.

Answer 4

Do you know the Pythagoras theorem?

Answer 5

a^2 + b^2 = c^2

I tried doing 5^2 +5^2 = c^2, which gave me the square roiot of 50, but it didn't take that answer..

Answer 6

You can't use the two sides of 5 because they don;t form a right triangle.

Answer 7

Use the Pythagoras theorem as you wrote it correctly above to find DC.

Answer 8

You see the right triangle in black?
Find x, the length of the lower leg DC.

Answer 9

That would be 4 since the square root of 16 is 4.

Answer 10

Think only of right triangle BCD for now.