The 4 interior angles of a quadrilateral add up to 360 degrees.
360-65-90-60 = 145 degrees which is the missing angle
you cant
Subtract 300 from 360.
It depends on what information is available.
There is no such thing as a regular trapezoid. REGULAR implies that all sides and all angles are equal. If that is the case, with a quadrilateral each angle would be 90 degrees, none would be 50.
No cheating!
There is no specific limitation on any one angle of an inscribed quadrilateral.
you cant
Subtract 300 from 360.
To find the measure of an angle, you need to know the size of the entire angle and the other angles within the angle. Then, you subtract the smaller, known angles from the entire, large angle and you should get the measure of the missing angle.
It depends on what information is available.
A rectangle is a quadrilateral (four sided shape) with four right angles. Therefore, the measure of every angle is 90 deg.
Subtract the (sum of the other three angles) from 360.
A protractor would be helpful
With only one number, you cannot - unless that one number happens to be the measure of the missing angle!
It depends on what your measuring and the measure of the other given angles. "X" is also known as the missing angle. ex. In triangle ABC, the measure of angle A is 40 and the measure of angle B is 80 find the missing angle. answer- Angle C would be 60 because a triangle's angles add up to 180 degrees.
Supplementary angles are two angles that measure up to 180 degrees. EXAMPLE: If the an angle measures 70 degrees, to find the missing angle, you subtract 70 from 180 because supplementary angles equal 180 degrees. Your answer (in this case 110) is the answer for the measure of the missing angle.
no #9