For which shapes is 180 degrees the smallest angle of rotational symmetry ?

Which statement best explains why ben uses the width hi to create the arc at j from point k

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

Ineed here’s a picture of the question