How do you know that a certain side is the longest side?

The longest side of a triangle is the side opposite the largest angle. For the given angles this would be the side opposite angle A. Without at least one linear measurement, the length of any side can not be determined.Click to see full answer. In respect to this, how do you know that a certain side is the longest side in right triangle?By theorem of interior angles , the longest side is opposite to the largest angle in a triangle. For a right angled triangle, the largest angle is 90° hence the longest side is the side opposite to this angle that is the hypotenuse. Hence, in a right angled triangle the longest side is the hypotenuse.Also Know, which side is a on a triangle? The side opposite the right angle is called the hypotenuse. It is the largest side of a right-angled triangle. If you stand at A in the triangle ABC, the side BC is opposite to you and the side AB is next to you. We therefore say that BC is the opposite side to angle A and AB is the adjacent side to angle A. Beside above, what are the formulas for triangles? Pythagoras’ theorem states that in a right triangle (or right-angled triangle) the sum of the squares of the two smaller sides of the triangle is equal to the square of the hypotenuse. Geometry Formulas Triangles – Pythagoras’ Theorem [ c = sqrt {a^2 + b^2} ] [ b = sqrt {c^2 – a^2} ] [ a = sqrt {c^2 – b^2} ] What is a scalene triangle?Scalene Triangle. A scalene triangle is a triangle that has three unequal sides, such as those illustrated above. SEE ALSO: Acute Triangle, Equilateral Triangle, Isosceles Triangle, Obtuse Triangle, Triangle. CITE THIS AS: Weisstein, Eric W. “