Question

If the sum of the measure of 3 angles in a quadrilateral is equal to 290°, the fourth angle must measure 70°

[True or False]

Answer 1

Answer:

True

Step-by-step explanation:

Sum of all the angles of a quadrilateral = 360

Sum of 3 angles is 290.

The fourth angle = 360 - 290 = 70

Answer 2

Answer:

True

Reason:

The sum of all angles in a quadrilateral is 360 degrees, and there are 4 angles in a quadrilateral. If 3 angles together measure 290 degrees, the 4th angle should be able to make a total of 360 degrees when added.

• Let the 4th angle be 'x'. Then,

1. 290+x=360.
2. x=360-290
3. x=70.
4. The 4th angle is 70 degrees.

So, the statement is correct.

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