D in triangle ABC is the midpoint of BC. The sums of A, B, C are (3,1), (4,5), (- 2, -1), respectively. Show that AD divides the triangle ABC into two equilateral triangles.
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1
Answer:
AD is the work as median
- so we know. that median divide a triangle into two equal parts
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12
Answer:
ad is of 90°..........
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