kwhailey kwhailey

20-05-2018
Mathematics

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Which type of triangle is formed by joining the vertices A(-3, 6), B(2, 1), and C(9, 5)?

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smmwaite smmwaite

20-05-2018

Find the lengths AB, BC and AC.
length AB= √(4²+(-4)²) = √32
length BC = √(4²+7²) = √65
length AC = √(8²+3²) = √73

From the lengths of this triangle it can be seen that no side is equal to the other and also it is not a right triangle.

So, triangle ABC is a scalene.

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