Missing lengths of a 45°-45°-90° Special Right Triangle given Hypotenuse length = 20

Leg lengths of a 45°-45°-90° Special Right Triangle are equal
Leg lengths =
Hypotenuse length/2

Leg lengths =
20/2

Rationalize to remove the radical from the denominator:
Leg lengths =
20 * √2/2 * √2

Leg lengths =
20√2/2

Leg lengths = 10√2 = 14.142135623731

The solution above and all other related solutions were provided by the 45°-45°-90° Special Right Triangle Application