Two pens are same length. vs Two pens are of same length.

[Learner7]

1. Two pens are same length.
2. Two pens are of same length.
I am sure that 2nd sentence is correct.
But, dubious about the second.
Please answer and explain.

[Beeesneees]

Both are incorrect.

Two pens are of the same length.
Two pens are the same length.

These are correct and mean the same thing.
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Cheers m' dears!

[Antar]

hello our teachrer Beeesneees

I wonder if we can say " two pens have the same length."

[Beeesneees]

We can, yes.
_________________
Cheers m' dears!

[Tofu]

- XXX and YYY are the same length.
- XXX and YYY are of the same length.
- XXX and YYY have the same length.

What do you think of saying XXX and YYY are the same in length instead?

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http://math.about.com/library/blmoreonangles.htm
For instance, 2 line segments are congurent if they are the same in length.
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[Mordant]

That's fine, too, Tofu.

[Tofu]

Thank you, Mordant.