6- X / 6 (when x =7) * Do Not reduce

-1/6 (- 1/6)

Step-by-step explanation:

6 - 7 = - 1

-1 / 6 = -1/6

[- 1/6 simplified]

Therefore,additional information would you need to prove that ΔABC ≅ ΔXYZ by HL is

Side AC is congruent to side XZ.

Step-by-step explanation:

Given:

Angle B = 90 degrees,

side BC = 20,

angle Y = 90 degrees, and

side YZ = 20.

To Prove:

ΔABC ≅ ΔXYZ    by   Hypotenuse Leg theorem

Proof:

In  Δ ABC and Δ XYZ

BC ≅ YZ     ……….{Each side measure is 20 given}

∠B ≅ ∠Y     ……….{Each angle measure is 90° given}

AC ≅ XZ     ……….{Additional information requirement (Hypotenuse)}

Δ ABC ≅ Δ XYZ ….{By Hypotenuse Leg test}

Therefore,additional information would you need to prove that ΔABC ≅ ΔXYZ by HL is

Side AC is congruent to side XZ.