Find the measure of each angle if <BAD and <BDC are right angles and m<ABC=84

Answer 1

I assume you are working with a quadrilateral ABCD in which angles BAD and BCD are right angles.

Since the four interior angles of a quadrilateral add up to 360°, therefore the remaining angles add up to (360-90-90)=180°.

Can you figure out the fourth angle now?

Answer 2

Your mom