Geometryhard · Past Paper
What is the ratio of the inradius (r) to the circumradius (R) of an equilateral triangle?
A1:2
B1:3
C2:3
D1:sqrt(3)
✓ Correct Answer: A — 1:2
For an equilateral triangle, R = a/sqrt(3) and r = a/(2*sqrt(3)). Thus r:R = 1:2.
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