Question

What type of triangle is formed by joining the points D(7, 3), E(8, 1), and
F(4, -1)?
A .equilateral triangle
B. isosceles triangle
C. right triangle
D. acute scalene triangle
E. obtuse scalene triangle

Answer 1

Segment DE with slope -2 is perpendicular to segment EF with slope 1/2. The triangle is a ...
  C. right triangle

Answer 2

Answer:

right triangle

Step-by-step explanation: