Geometrymedium · Past Paper
If the ratio of an angle and its supplement is 1:5, find the angle.
A30 degrees
B150 degrees
C60 degrees
D120 degrees
✓ Correct Answer: A — 30 degrees
x + 5x = 180; 6x = 180; x = 30.
Share this question
More from Geometry
- Two tangents PA and PB are drawn to a circle with center O from an external point P. If angle APB = 80 degrees, find angle POA.
- If the three angles of a triangle are (x+10), (2x-20), and (x+30), find x.
- An exterior angle of a triangle is 110 degrees and one of the interior opposite angles is 40. Find the other interior opposite angle.
- If the supplement of an angle is 2/3 of its reflex angle, find the angle.
- If the base of an isosceles triangle is 12 cm and its perimeter is 32 cm, find its area.