Posted by **monique** on Sunday, March 25, 2012 at 5:57pm.

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

- Geometry -
**Reiny**, Sunday, March 25, 2012 at 6:10pm
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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