Question

Does 20, 40, 30 form a right triangle

Answer 1

Call the 3 sides a,b,c respectively. (a=20; b=30; c=40)

To form a right triangle with 3 lengths, they must satisfied the equation : $a^{2} +b^{2} =c^{2}$ (aka pythagorean theorem)

Replace numbers : $20^{2} +30^{2} =40^{2}\\ 400 + 900 = 1600 (false)$

-> These lengths do not form a right triangle.

Answer 2

Answer: No

Step-by-step explanation: In order for a triangle to be right, the first number and second number has to be smaller than the middle number.

20+30= 50

50>40

therefore 20,40,30 can not be a right triangle