Segment Lengths and Formulas Quiz

What is the formula for the cord-cord relationship inside a circle?

• a / b = c / d

• a - b = c - d

• a * b = c * d

• a + b = c + d

In the cord-cord formula, what must be true about segments a and b?

• They must be perpendicular.

• They must be from different chords.

• They must be from the same chord.

• They must be equal in length.

What is the formula for the secant-secant relationship?

• W - x = y - z

• W * (W + x) = y * (y + z)

• W / x = y / z

• W + x = y + z

In the secant-secant formula, what does 'W' represent?

• The inside part of the secant

• The tangent line

• The outside part of the secant

• The whole secant

What is the result of solving the equation 5x = 60 in the secant-secant example?

• x = 10

• x = 12

• x = 15

• x = 20

In the tangent-secant formula, what is unique about the tangent line?

• It is subtracted from the secant.

• It is divided by the secant.

• It is squared in the formula.

• It is added to the secant.

What is the formula for the tangent-secant relationship?

• R - s = t

• R / s = t

• R + s = t

• R^2 = s * (s + t)

In the tangent-secant example, what is the value of R^2 if R = 31?

• 841

• 1024

• 961

• 900

What is the value of x in the equation 20 * (20 + x) = 961?

• x = 35

• x = 28.05

• x = 30

• x = 25

What operation is necessary to solve for x in the tangent-secant formula?

• Multiplication

• Subtraction

• Addition

• Square root