Question

Question in the pic. help

Answer 1

what does CPCTC mean?

Answer 2

looks like its 2 and 5

Answer 3

It is the Theorem that involves Congruent Triangles

Answer 4

CPCTC = Corresponding Parts of Congruent Triangles are Congruent

So, if you can show that two triangles are congruent, then you can claim that any corresponding parts are congruent.

Answer 5

Hint: For proofs in general, any time you use a term, you should ask yourself what the definition is. "ABCD is a rhombus" is not a useful or significant statement to make unless I know what a rhombus is.

Relevant definition: "In Euclidean geometry, a rhombus (◊), plural rhombi or rhombuses, is a quadrilateral whose four sides all have the same length."

Answer 6

So which one is the right answer to the question.

Answer 7

I think its d

Answer 8

Dim, never ask "What is the answer."

Answer 9

You already explained it.

Answer 10

But if you still can't figure out the answer by yourself, then I haven't explained it well enough. Ask me for more clarification. Don't ask what the answer is.