Question

The measure of three angles of a quadrilateral is 30˚, 70˚ and 100˚. Find out

the measurement of fourth angle.​

Answer 1

Answer:

160°

Step-by-step explanation:

As measure of all interior angles of a quadrilateral is 360°

let the forth angle be x

then ,

• x + 30° + 70° + 100° = 360°
• x = 360° - 200°
• x = 160°

Answer 2

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160°

Step-by-step explanation:

We know that the angle sum of a quadrilateral is 360°.

Here the given measures of angle are 30°,70°,100°

To find

• the measure of the fourth angle.

Let the 4th angle be x.

We know that

x + 30° + 70° + 100° =360°[ ASP of Quadrilateral]

x + 200° = 360°

x = 360° - 200°

x = 160°

So the 4th angle is 160°.