Geometryhard · Past Paper
The exterior angle of a triangle is 120 and the ratio of the interior opposite angles is 2:1. Find the larger interior opposite angle.
A40 degrees
B60 degrees
C80 degrees
D100 degrees
✓ Correct Answer: C — 80 degrees
2x + x = 120; 3x = 120; x = 40. Larger angle = 2x = 80.
Share this question
More from Geometry
- If the length of a transverse common tangent to two circles is 8 cm and the radii are 5 cm and 1 cm, find the distance between centers.
- The coordinates of the point dividing the segment (1, 3) and (2, 7) in the ratio 3:4 externally are:
- If the angle between two radii is 120 degrees, find the angle between the tangents at the ends of those radii.
- Two supplementary angles are in the ratio 2:3. Find the smaller angle.
- What is the slope of a line which is perpendicular to the Y-axis?