What type of triangle is formed by joining the points D(7, 3), E(8, 1), and F(4,-1)?
1 Answer
Oct 1, 2016
A right-angled triangle is formed.
Explanation:
1) calculate d the distance between the points of the triangles, use the distance formula :
Pythagorean theorem :
The theorem states that: The sum of the squares of the lengths of the legs of a right triangle is equal to the square of the length of the hypotenuse.
Now we use the theorem to check and see if the triangle is right-angled or not :
As