45 45 90

Select all that are true:

• a square is a parallelagram

• a square is not a rectangle

• the diagonals in a square are congruent

• a square can be divided into 45, 45, 90 special right triangles

• rectangle
• rhombus
• square
• isosceles trapezoid

What is the radius of the circle circumscribing the square?

• 8√2

• 10

• 4√2

• 8

If CB = 3, then AB must equal:

• 3

• $3\sqrt{3}$

• $3\sqrt{2}$

• 6

The diagonals of a square are _____ to each other.

• perpendicular

• parallel

• askew

What is one side length of this square?

• 8

• 20

• 10

• 5

In this 30-60-90 triangle, what is the length of the hypotenuse?

• 4√2

• 4√3

• 4

• 8

For a 45-45-90 triangle, if one of the sides is 4, then which one is NOT a possible side?

• 4

• $4\sqrt{2}$

• 2

• All of the sides are possible.