From a point within a triangle, line segments are drawn to the vertices. A necessary and sufficient condition that the three triangles thus formed have equal areas is that the point be:
A
the centre of the inscribed circle
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B
the centre of the circumscribed circle
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C
such that the three angles formed at the point each be 1200
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D
the intersection of the altitudes of the triangle
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E
the intersection of the medians of the triangle
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Solution
The correct option is E the intersection of the medians of the triangle To divide a triangle into three triangles of equal area is to find the centroid (the point where the medians intersect). After determining the centroid (point G below), construct the segments connecting the vertices to the centroid. The three triangle created are of equal area.
So from a point within a triangle, line segments are drawn to the vertices. A necessary and sufficient condition that the three triangles thus formed have equal areas is that the point be the intersection of the medians of the triangle