Answer:
c,d,e
Step-by-step explanation:
8²+12²=64+144=208 (not a perfect square)
12²-8²=144-64=80 (not a perfect square)
15²+10²=225+100=325 (not a perfect square)
15²-10²=225-100=125 (not a perfect square)
26²-24²=676-576=100=10² (right angled triangle)
20²-12²=400-144=256=16² (right angled triangle)
25²-15²=625-225=400=20² (right angled triangle)
18²+20²=324+400=724 (not a perfect square)
20²-18²=400-324=76 (not a perfect square)
