Answer:
1: a
2: a
3: a
4: b
Explanation:
a right triangle means the pythagorean theorem applies
a^2 + b^2 = c^2
is true for the triange
a and b are the two shorter sides and c is the long side
test with values to see if true
6^2 + 8^2 = 10^2
36 + 64 = 100
100 = 100
true, it is a right triangle
3 root^2 + 8 root^2 = 11 root^2
3 + 8 = 11
11=11
true, it is a right triangle
3^2+ 10 root^2 = 19 root^2
9 + 10 = 19
19=19
true, it is a right triangle
3^2 + 5^2 = 6^2
9+25= 36
34= 36
false not a right triangle
i hope this helps