Question

(II): Draw an isosceles triangle. Locate its centroid, orthocentre, circumcentre
and incentre. Verify that they are collinear.
(1) Ex​

Answer 1

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In △ABC,AB=AC,AD⊥BC⟹BD=BC⟹∠BAD=∠DAC

∵AD⊥BC, orthocentre lies on AD

BD=BC,centroid lies on AD

∠BAD=∠DAC,incentre lies on AD

∴centroid,orthocentre,circumcentre,incentre are collinear

Answer 2

Answer:

(II): Draw an isosceles triangle. Locate its centroid, orthocentre, circumcentre

and incentre. Verify that they are collinear.

(1) Ex