100 POINTS PLUS BRAINLIEST QUESTION ATTACHED

Hi!
Yes, it is.
It's because when you square two smaller sides and add them together you get 900, and the square root of 900 is 30, which is the biggest side, or the hypotenuse. Applying the Pythagorean theorem: 18^2 + 24^2 = 900 => square root of 900 = 30.
Hope this helps!
Answer:
It is a right triangle
Step-by-step explanation:
We can use the Pythagorean theorem to determine if this is a right triangle
a^2 +b^2 = c^2
18^2 +24^2 = 30^2
If this is true then it is a right triangle
324+576=900
900 = 900
This is true so it is a right triangle