Question

What is the measure of ∠ABD?
141° 49° 39° 51°

Answer 1

The answer is 39°

Explanation:

There are two triangles are given

∆ABC and ∆ABD

For ∆ABC

• m∠B = 90°

As we can see here, ∆ABD is inside the ∆ABC.

So, let us take ∠ABD as x

∠ABD + 51° = 90°

x + 51° = 90°

x + 51° - 51° = 90° - 51°

x = ∠ABD = 39°

Thus, ∠ABD is 39°