Geometry
posted by monique .
Which of the following can be used to describe the triangle with the vertices listed below?
F(1, 1), G(8, 1), H(9, 10)
I. acute
II. obtuse
III. right
IV. scalene
V. isosceles
VI. equilateral
Please show me how you got the answer

Just make a rough sketch
obviously GF is a horizontal line (same y values)
and H is to the left of the vertical through G.
So angle G is obtuse and we have an obtuse  angled triangle.
Since there appears to be only one choice in the answers, I did not bother to check if GF = GH to make it also isosceles. That would be easy to check.
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