Is side lengths 4,8,9 right triangle?

4,8,9 is not a right triangle

Step-by-step explanation:

a right angled triangle makes use of the following equation

c^2 = a^2 + b^2

the values given are 4,8,9

c would be 4

a and b would be e and 9

put these values in the equation

4^2 = 8^2 + 9^2

16 = 145

hence the side lengths 4,8,9 is not a right triangle