"So God created mankind in his own image, in the image of God he created them; male and female he created them".
Genesis 1:27
What exactly does it mean when we are told that God created us in His image?
Obviously, it cannot mean that he created us to look like Him.
That's what it means in the Hebrew. We are humanoid in form which means head, arms, legs etc. That's the likeness and image of God.
Gen_1:26 And God said, Let us make man in our image, after our likeness: and let them have dominion over the fish of the sea, and over the fowl of the air, and over the cattle, and over all the earth, and over every creeping thing that creepeth upon the earth.
image
H6754
???
tselem
tseh'-lem
From an unused root meaning to shade; a phantom, that is, (figuratively) illusion, resemblance; hence a representative figure, especially an idol: - image, vain shew.
The underlined is not particularly important since that is the definition of this word's root word but the rest of the text is this words actual definition. Here we see that essentially the "figure" of something is is a physical representation of the original. It would be akin to a boy being extra tall like his father and maybe grandfather. That boy would be the "figure" of his male relative in a physical sense. Angels have the basic head, two arms and legs and torso...the basic "human" type design. God the Father has been seen and described in the scriptures and has the same physical design. It is then clear he used his own form, whether a permanent or a temporary form, as a pattern for much of his creations ie: Angels and Mankind.
likeness
H1823
??????
demu^th
dem-ooth'
From H1819; resemblance; concretely model, shape; adverbially like: - fashion, like (-ness, as), manner, similitude.
And this word has the same basic meaning as well.