, Answer:
Explanation:
Using PGT,
Longest side=13cm(hypotenuse)
Base=12cm
Other side = 5 cm
PGT states that the longest side is the sum of squares of the other two sides.
H²= B²+P²
13²=12²+5²
169=144+25
169=169
The Pythagoras theorem is verified here.
Hence the triangle must be a right angled triangle