Question

If three angles af a quadrilateral are 45⁰ , 75⁰ and 120⁰. Find The fourth angle.​

Answer 1

Answer:

120°

Step-by-step explanation:

we know that the sum of the interior angles in a quadrilateral is 360°

so 45+75+120+fourth angle=360°

240+fourth angle=360°

fourth angle=360-240=120°

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Answer 2

Given:

Angles are 45°, 75° and 120°

To find:

Fourth angle.

Note:

$\pink{\fbox{Sum of all angles in quadrilateral = 360°}}$

Answer:

Fourth angle = 360° - (45°+75°+120°)

= 360° - 240°

Hence, the fourth angle is 120°

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