Question

the three angles of a quadrilateral are 50, 70 and 105 . find the fourth angle​

Answer 1

Answer:

135°

Step-by-step explanation:

Total sum of angles is 360°

360°-50°-70°-105°=135°

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Answer 2

Given angles are 50°, 70° and 105°.

Let the fourth angle be x°.

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

So, 50+70+105+x = 360

or, 225+x = 360

or, x = 360-225

or, x = 135

Hence, the fourth angle is 135°.