Geometrymedium · Past Paper
If two interior angles on the same side of a transversal intersecting two parallel lines are in the ratio 4:5, find the larger angle.
A80 degrees
B100 degrees
C120 degrees
D140 degrees
✓ Correct Answer: B — 100 degrees
4x + 5x = 180; 9x = 180; x = 20. Larger angle = 5 * 20 = 100.
Share this question
More from Geometry
- If all sides of a triangle are equal to 5 cm, its perimeter is:
- If three angles on a straight line are x, 2x, and 3x, what is the value of x?
- Find the angle which is equal to its complement.
- What is the sum of angles in a triangle in spherical geometry?
- In a circle, chord AB = chord AC. If angle BAC = 40 degrees, find angle ABC.