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In an equilateral triangle, the inradius...

In an equilateral triangle, the inradius, circumradius, and one of the exradii are in the ratio

A

concylic

B

coincident

C

collinear

D

none of these

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The correct Answer is:
B
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Half angle formulae| Area of triangle inradius| Circumradius and exradii

QUANTUM CAT-GEOMETRY-QUESTION BANK
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  14. In the adjoining figure angleBAC=60^(@) and BC = a, AC = b and AB = c,...

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  15. In the adjoining figure of DeltaABC, angleBCA=120^(@) and AB = c, BC =...

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  16. In a right angled DeltaABC, angleC=90^(@) and CD is the perpendicular ...

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  17. If the medians of a triangle are equal, then the triangle is :

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  18. The incentre of a triangle is determined by the :

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  19. The circumcentre of a triangle is determined by the :

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  20. The point of intersection of the angle bisectors of a triangle is :

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