Please help me choose if they are a yes or no.

A)yes

B)yes

c)no

d)yes

e)yes

f)no

Part A

This is the same as saying 2(AB+BC). A more written out version is AB+BC+CD+DA, though it's not needed since the opposite sides are congruent (AB = CD and BC = DA)

Part B

The diagonals of any parallelogram bisect each other. They cut each other in half.

Part C

The adjacent sides of a parallelogram aren't always equal in length. It only happens when we have a rhombus.

Part D

The angles mentioned are alternate interior angles. They are congruent due to AD and BC being parallel.

Part E

We can use the SSS or SAS congruence theorem to prove these triangles are congruent.

Part F

These are adjacent angles that aren't always the same measure. Diagonal AC does not bisect angle DAB. This only happens if we had a rhombus.

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: