Question

What is the area of the triangle formed by a diagonal to this square?​

Answer 1

Answer:

Area of triangle=1/2×height×base

Or by heron's triangle formula if height is not given=

$\sqrt{s{s - a}{s - b}{s - c}$

where s=A+B+C/2,

A,B,C are three sides of triangle.

And the question you asked you forget to attach the image of figure.So,maybe these formula will help you.