C-08-Q156mediumsingle_mcq
Two circles touch externally when their centres lie—
Two circles touch externally when their centres lie—
- aon opposite sides of the common tangent
- bon the same side of the common tangent
- ccoincident
- don the tangent
ব্যাখ্যা
When two circles touch externally, they lie outside each other and the common tangent at the contact point separates them, so the two centres fall on opposite sides of that tangent. The distance between centres equals the sum of the radii.