Will a non-regular acute triangle tessellate the plane?

Question

How do you know?

Answer 1

Any acute triangle can form a parallelogram when fitted to another rotated by 180°.
So can it tessellate the plane?

Answer 2

yes, because it would form a pattern without gaps or overlap.

Answer 3

but what is a non-regular acute triangle ?

Answer 4

I suppose non-regular means that the angles are neighter 45, 30, 60, 90 or any other round number.
Acute means all angles are below 90.

Answer 5

neither

Answer 6

thanks to both of you for your help!

Answer 7

You're welcome!
By the way, which level of math are you doing?

Answer 8

Geometry, I will put that in the subject box next time!

Answer 9

That would be a good idea!