name the type of triangle formed by the points A (-5,6), B (-4,-2), C (7,5)?
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It is a scalene triangle
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A (–5, 6), B (–4, –2) and C (7, 5)
AB = √{(-4+5)² + (-2-6)²}
= √1+64
=√65
BC=√{(7+4)² + (5+2)²}
=√121 + 49
=√170
AC=√{(7+5)² + (5-6)²}
=√144 + 1
=√145
Note: The formula used is
Distance d= √{(X2 - X1)² + (Y2- Y1)²}
All sides are different in measure, so ABC is a scalene triangle.
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