Question

three angles of a quadilateral are 75° ,90° and 105° find the fourth angle​

Answer 1

Step-by-step explanation:

we know that the sum of quadrilateral is 360° so the fourth angle is 90°

Answer 2

Answer:

75° + 90° + 105° + x = 360°

270° + x = 360°

x = 360° - 270°

x = 90

Step-by-step explanation:

here's ur answer!!

thanks!!!