Question

draw a triangle on a graph paper write it's coordinates.find it's perimeter using distance formula​

Answer 1

Answer:

Step-by-step explanation:

The given vertices are A(2,-2), B(14,10) C(11,13) and D(-1,1).

We need to show that ABCD is a rectangle.

Opposite sides of a rectangle are equal and parallel. Length of the diagonals are equal.

Distance formula:

Using distance formula we get

Since AB=CD and BC=AD, therefore opposite sides are equal.

AC=BD, it means diagonals are equal.

Since, the opposite sides and diagonals are equal, therefore ABCD is a rectangle.