Given that triangle abc is congruent to triangle def which of the following statements much be true according to cpctc?

The correct option is A) .

Step-by-step explanation:

Consider the provided information.

It is given that the ΔABC ≅ ΔDEF.

Now according to CPCTC:

Corresponding parts of congruent triangles are congruent.

Now consider the figure 1:

In figure 1, ΔABC ≅ ΔDEF therefore 3 pairs of congruent sides and congruent angles are shown below:

Now 3 pairs of congruent angles are:

Now, match the provided options.

By observing the provided options it can be concluded that the correct option is A.

The correct option is A) .

146%

step-by-step explanation:

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18