How do i prove that 4,5, and 7 are measure of sides of a triangle? what formula should i use?

Question

anonymous · Answer

If it's a right-angled triangle, use the pythagoros theorem.
a^2=b^2+c^2

anonymous · Answer

that is not however

ganeshie8 · Answer

triangle inequality theorem

mayankdevnani · Answer

by using inequality of triangle...

ganeshie8 · Answer

no side shoudld be longer than sum of other two sides

ganeshie8 · Answer

to fit into a triangle

anonymous · Answer

i've tried the pythagorias theorem and i don't think it's applicable to this problem

ganeshie8 · Answer

check length of every side :

4 < 5+7
5 < 4+7
7 < 5+4

ganeshie8 · Answer

are above thigs true ? if they are true, then you have a triangle !

anonymous · Answer

Triangle Inequality theorem states: For something to be a triangle ABC, sides AB + BC > AC.

Meaning the sum of the shortest sides must be greater than the longest side

anonymous · Answer

ok, thanks. what are other theorems or formulas are used in finding for the sides of a triangle? is the pythagorias theorem the only one used in right triangles?

ganeshie8 · Answer

pythagorean theorem comes in module 4

ganeshie8 · Answer

looks like you're working on module 2 right ?

ganeshie8 · Answer

and here we are only checking if the given sides make a triangle or not... we are not finding the actual lengths.

anonymous · Answer

ok, thanks for the help guys!

ganeshie8 · Answer

for checking, therez only one theorem. which we have used in this problem.

ganeshie8 · Answer

i cant think of any more theorems..