Question

Find the number that belongs

in the green box.

Round your answer to the nearest tenth.

Answer 1

30, assuming it's a right triangle

Explanation:

The answer assumes this is a right triangle. Otherwise, it's impossible to answer.

The sum of angles in a triangle is 180deg. As we know 2 of the angles (90deg and 60deg) we need to subtract them from 180deg.

180-90-60 = 30