Will give brainliest to whoever answers fastest if correct

if △stu ~ △xyz, which statements must be true? check all that apply.

startfraction s t over x y endfraction = startfraction t u over y z endfraction
startfraction x y over s t endfraction = startfraction su over x z endfraction
∠s ≅ ∠x
∠t ≅ ∠y
st = xy
su = xz

Step-by-step explanation:

Given:

So, from the similarity we deduct that three pair of angles are congruent: ∠S ≅ ∠X, ∠T ≅ ∠Y and ∠U ≅ ∠Z.

Similarly, sides are proportional, this means that corresponding sides are in the same relation:

We ignore the reasons why this triangles are similar, but once they are similar we can deduct all.

Therefore, the correct answers are:

ST/XY = TU/YZ

∠S ≅ ∠X

∠T ≅ ∠Y

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

answer:  

123455421

step-by-step explanation: easy