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I have these vertices of a triangle A 5,20 B 5,30 C 15, 25

What are the equations of each of the three line that is: AB, BC, and AC? What is the length of each of the three lines?

Thanks very much.

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    It's just the distance between two points. Repeat for each pair of vertices. For example: http://math.stackexchange.com/questions/367503/find-distance-between-two-points – 2017-01-28
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    Where are you getting stuck? What have you tried so far? – 2017-01-28

1 Answers 1

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Hint -

For equations use following formula-

$(y - y_1) = \frac{(y_2 - y_1)}{(x_2 - x_1)} . (x - x_1)$

For length -

$\sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$