Question

The three angles of a quadrillateral are stil Do° the fourth angle is​

Answer 1

Resposta:

Explicação passo a passo:

Answer :-

Consider the fourth angle as X

In a quadrilateral we know that the sum of all angles is 360°

so,

We can write it as

X + 75° + 90° + 75° = 360°

On further calculation we get

X = 360° - 75° + 90° + 75°

By subtraction

X = 360° - 240°  

X = 120°

Therefore, the measure of the fourth angle is 120°.

( I don't understand " Do° " (Given data). I have written the mind solution, 75°, 90° and 75° )