Triangular in shape

[Freeguy]

Which of these is correct?

A. Triangular in shape
B. Triangular shape

Thanks!

 

[emsr2d2]

They can both be correct depending, as usual, on the context.

This chocolate box is triangular in shape.
I drew a triangular shape on a piece of paper.

Note, however, that it would be more natural to say:

This chocolate box is triangular.
I drew a triangle on a piece of paper.

 

[Freeguy]

Areas of fertile soil called deltas, usually triangular in shape are formed by mud deposited at the mouth of a river. ( In this sentence what's wrong with using "triangular shap" instead of "triangular in shape" ? )

 

[bhaisahab]

Areas of fertile soil called deltas, usually triangular in shape are formed by mud deposited at the mouth of a river. ( In this sentence what's wrong with using "triangular shap" instead of "triangular in shape" ? )

"Areas of fertile soil called deltas, usually triangular shape are formed by mud deposited at the mouth of a river." This is ungrammatical.

 

[Barb_D]

"a triangular shape" is a noun phrase.
"triangular in shape" is a modifier.