Question

formula for finding the diagonal of a quadrilateral​

Answer 1

Answer:

Finding the diagonal of an irregular quadrilateral

Homework Statement. In an irregular quadrilateral ABCD, the length of all sides are AB=a BC=b CD=c DA=d and the length of the diagonal AC is x. Angle ABC + angle ADC = 180.

Homework Equations. Cosine formula c2 = a2 + b2 - 2abcosθ

The Attempt at a Solution. I really have no idea how to start.

We've learned that a diagonal is a line that connects two non-adjacent corners.✔️❤️

All polygons, except for the triangle, have a number of diagonals. The formula to find the number of diagonals is n(n - 3)/2, where n is the number of sides the polygon has.

[n-3]/2

[I hope help ✌️✔️❤️