Question

What is the length of side s of the square shown below?

45
90°
OA. 1
OB. 2
OC. 2.2
OD. 4
OE. E
F. 4.2

Answer 1

E

Explanation:

using Pythagoras' identity on the lower right triangle , with legs s and hypotenuse 2 , then

s² + s² = 2²

2s² = 4 ( divide both sides by 2 )

s² = 2 ( take square root of both sides )

s =
`√(2)`