Question

In quadrilateral PQRS angleR =60.Find the ratio of angleR:angleQ
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Answer 1

GIVEN, ∠R = 60°

THEREFORE, ∠Q + ∠R = 180° ( CO-INTERIOR ANGLES )

==> ∠Q + 60° = 180°

==> ∠Q = 180° - 60°

==> ∠Q = 120°


THE RATIO OF ∠R : ∠Q IS

==> 60° : 120°

==> 1 : 2

Answer 2

In quadrilateral PQRS, angle R=60--(Given)
angle Q±angle R =180__ (OPPOSITE angle of parallegram are supplementary )
ANGLEQ+60=180
ANGLEQ=180-60=120
THUS,the ratio is AngleR:AangleQ
=60:120=1:2