Concept explainers
To show that the
Explanation of Solution
Given information:
The triangle has vertices is
Proof:
The triangle DEF is a right triangle can be show as
Use distance formula to show the triangle is a right triangle
First find DE, DF and EF
Therefore,
The right triangle states that the square of the length of the hypotenuse is equal to the sum of the squares of the other two sides
So, the triangle is a right triangle
Area of a right triangle is
Hence,
The triangle is a right triangle and the area is 10.
Chapter 13 Solutions
McDougal Littell Jurgensen Geometry: Student Edition Geometry
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