John writes the proof below to show that the sum of the angles in a triangle is equal to 180 degrees Which would John NOT need to use in his proof?

A. The sum of the angles on ore side of a straight line is 180

B. If a statement about a is true and a = b statement formed by replacing a with b is also true.

C. When two parallel lines are cut by a transversal, the resulting alternate interior angles are congruent.

D. When two parallel lines are cut by a transversal, the resulting alternate exterior angles are congruent

Ineed i do not understand i'm only 8

Suppose there is a simple index of three stocks, stock abc, stock xyz, and stock qrs. stock abc opens on day 1 with 4000 shares at $3.15 per share. stock xyz opens on day 1 with 5000 shares at $4.30 per share. stock qrs opens on day 1 with 6000 shares at $4.60 per share. the price of stock abc on day 8 begins at $3.50. the price of stock xyz on day 8 begins at $3.90. stock qrs opens on day 8 with a price of $4.50 per share. assume that each stock has the same number of shares that it opened with on day 1. what is the rate of change of this simple index over 1 week?

Cora bought a package of erasers. there are 4 pink erasers and 12 blue erasers. what is the ratio of pink erasers to blue erasers?