Three angles of a quadrilateral each measures 87*(degrees)..what is the measure of the fourth angle??
See if you can figure it out after studying this site.
http://www.mathsrevision.net/gcse/pages.php?page=17
All 4 of them have to add up to 360º
so far you have 3x87 or 261º
So how big is the fourth angle ?
If a quadrilateral has two 75 angles and 110 angles what measure is remaining angle
99degree
To find the measure of the fourth angle of a quadrilateral when the measures of the other three angles are known, we can use the fact that the sum of the measures of the angles in a quadrilateral is always 360 degrees.
Given that each of the three angles measures 87 degrees, we can calculate the sum of the measures of these angles:
3 angles * 87 degrees = 261 degrees
To find the measure of the fourth angle, we can subtract the sum of the known angles from the total sum of the angles in a quadrilateral:
360 degrees - 261 degrees = 99 degrees
Therefore, the measure of the fourth angle is 99 degrees.