Answer:
yes
Explanation:
Using the converse of Pythagoras' identity.
Ife the square of the longest side is equal to the sum of the squares of the other 2 sides, then the triangle is right.
longest side = 13, thus
13² = 169
5² + 12² = 25 + 144 = 169
Since 5² + 12² = 13² then the triangle is right