Geometryeasy · Past Paper
If two circles touch each other internally, the distance between their centers is equal to:
ASum of their radii
BDifference of their radii
CProduct of their radii
DRatio of their radii
✓ Correct Answer: B — Difference of their radii
For internal contact, the distance between centers is |R - r|.
Share this question
More from Geometry
- Find the length of the arc of a circle of radius 7 cm which subtends an angle of 90 degrees at the center.
- The point on the x-axis which is equidistant from (2, -5) and (-2, 9) is:
- Which of the following is the general equation of a circle?
- The sum of any two sides of a triangle is always:
- In triangle ABC, angle A = 30, B = 60. What is the ratio of sides a:b:c?