Question

(9) The sum of three angle of quadrilateral is 300, then the measures of the fourth angle is _______​

Answer 1

Answer:

We know that sum of all angles of quadrilateral is 360

Step-by-step explanation:

Let fourth angle be x

300 + x = 360

x=360-300

x= 60 degrees.

Answer 2

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Given

• Sum of 3 angles of quadrilateral = 300

To Find

• Fourth angle of quadrilateral

We KnOw

• Sum of all angles of quadrilateral = 360°

Solution

Let the fourth angle be x.

According to question,

➨ 300 + x = 360°

➨ x = 360° - 300°

➨ x = 60°

❄Verification

Sum of three angles + Fourth Angle = 360°

300° + 60° = 360°

360° = 360°

Hence, verified✔