The first one is 2x^2+2x-2
the second one is 2x^2-2x-2
the third one is 6h+6k
Any second part or anything else to look at?
Answer:- Equilateral triangle has an order 3 rotational symmetry.
Explanation:-
In geometry, a figure has rotational symmetry if it moves onto itself under rotation about an angle at center of rotation.
The order of rotational symmetry is the number of times the shape moves onto itself throughout a rotation of 360°.
An equilateral triangle has all its sides equal with equal interior angle of 60°.
It moves onto itself three times throughout a rotation of 360°.
⇒Equilateral triangle has an order 3 rotational symmetry.
