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It is 360 degrees minus the sum of the other three angles.

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Q: The measure of a fourth angle of a quadrilateral?
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In a quadrilateral, three of the angles are obtuse. Which of the following could not be the angle measure of the fourth angle60°90°40°20°?

In a quadrilateral, three of the angles are obtuse. Which of the following could not be the angle measure of the fourth angle? 60° 90° 40° 20°


If three angles of a quadrilateral measure 90 100 and 120 what is the measure of the fourth angle?

50 degrees (360 degrees in a quadrilateral)


Three angles of a quadrilateral measure 80 100 and 55 degrees what is the measure of the fourth angle?

125°


Three angles in a quadrilateral measure 32 66 and 102 what is the measure of the fourth angle?

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A quadrilateral has a 50 degree 70 degree and a 150 degree angle what is the measure of the fourth angle?

90 degrees


Three of the angles of a quadrilateral measure 80degrees 100 degrees and 55 degrees what is the measure of the fourth angle?

4


If three angles of a quadrilateral measure 90 145 and 78 degrees what is the measure of the fourth angle?

It is: 47 degrees


Three angles of a quadrilateral measure 90145and78 degrees what is the measure of the fourth angle?

The 4th angle is: 360-90-145-78 = 47 degrees


How do you find the measure of a fourth angle on a quadrilateral?

Subtract the (sum of the other three angles) from 360.


What is the fourth angle of a quadrilateral if the others measure 82 degrees 78 and 90 degrees?

110 degrees.


What is the fourth angle of a quadrilateral if the others measure 80 degrees 120 and 65 degrees?

95 deg


Three angle in a quadrilateral measure 54 25 and 99 What is the measure of the fourth angle?

The sum of all four interior angles in a quadrilateral must be 360, so the answer would be: 360 - 54 - 25 - 99 = 182