given:
ab = cd
bc = da

prove:
b = d

which of the following triangle congruence theorems would be used in this proof?

sss
sas
asa

SSS

Step-by-step explanation:

the triangles would be proven congruent by SSS

AC is equal AC because of the reflexive property (it is equal to itself).

We used SSS rule of congruence to prove that the triangles are congruent.      

Step-by-step explanation:

We are given the following information in the question:

AB = CD

BC = DA

We have to prove that

We will first prove the congruency of triangle.

AB = CD  ( Given )

BC = DA ( Given )

AC = CA (Common )

Hence, by SSS rule of congruence( Side Side Side).

Since the triangles are congruent,

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it

the answer is c hope it

step-by-step explanation: