A quadrilateral has a angle that measures 63°, 89° and 121°
What is the measure of the fourth angle?
360 - 63 - 89 - 121 = ?
360 - 63 - 89 - 121 = 87
To find the measure of the fourth angle in a quadrilateral, we can use the fact that the sum of the interior angles of a quadrilateral is always 360 degrees.
Given that three of the angles in the quadrilateral measure 63°, 89°, and 121°, we can find the measure of the fourth angle by subtracting the sum of these three angles from 360°.
Let's calculate it:
Sum of the three known angles:
63° + 89° + 121° = 273°
Now, subtract the sum from 360° to find the measure of the fourth angle:
360° - 273° = 87°
Therefore, the measure of the fourth angle is 87°.