Quadrilateral simply means a shape with 4 sides. It is 2 dimensional closed shape with straight lines. Its interior angles should sum up to 360°
If the angle of P = 70° , the angle of S = 112°
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PS and QR are parallel for what value of x.
x = angle of Q.
180° - 70° = 110°
the angle of R should be 180° - 112° = 68°
To check whether the interior angles sum up to 360°, we add up all angles
P = 70°
Q = 110°
R = 68°
S = 112°
360°
