I’m right 4 times

I can be a 2, or a 4.
Split me in half and I can become a 6, but do it wrongly and I’ll be an 8.
Lengthen my sides and I am not myself. anymore.

Are you a

Square?

I can be a 2, or a 4.

A square can be described as a power of 2 otherwise it's a quadrilateral, 4 sides.

Split me in half and I can become a 6, but do it wrongly and I’ll be an 8.

Split it in half along the diagonal it becomes two triangles (a 6). But do it otherwise it'll be two quadrilaterals (an 8)

Lengthen my sides and I am not myself. anymore.

If you lengthen the sides of a square it's not a square anymore (assuming you didn't lengthen all four sides equally)

Title

A square has 4 right angles

• Wow! That was a lot quicker than I expected! May 26, 2022 at 14:46
• Also, just a note: the answer is a part of the riddle, so I’ll accept the answer when you explain it. May 26, 2022 at 14:47
• @Buzzyy Ok.., so there's more to it than the answer itself? May 26, 2022 at 15:20
• Correct! Well done! May 26, 2022 at 15:42
• @Buzzyy Do you mean the title is a part of the riddle? May 26, 2022 at 19:41