SOLUTION: A triangle in the coordinate plane has verteces (1,2), (7,10), (26.2,4.4). Is this a right triangle? Why or why not? Find it's perimeter and it's area. Leg1=3.2cm Leg2=7.7cm Hypote

Algebra ->  Pythagorean-theorem -> SOLUTION: A triangle in the coordinate plane has verteces (1,2), (7,10), (26.2,4.4). Is this a right triangle? Why or why not? Find it's perimeter and it's area. Leg1=3.2cm Leg2=7.7cm Hypote      Log On


   



Question 796343: A triangle in the coordinate plane has verteces (1,2), (7,10), (26.2,4.4). Is this a right triangle? Why or why not? Find it's perimeter and it's area. Leg1=3.2cm Leg2=7.7cm Hypotenuse=8.3cm
Answer by solver91311(24713) About Me  (Show Source):
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Three non-collinear points can be grouped so as to form three pairs. Calculate the slopes of the lines that contain each pair of points. If any pair of such lines are perpendicualar, then the triangle is right. Otherwise not. Intersecting lines are parallel if and only if their slopes are negative reciprocals.

John

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