Hi, could anyone help me solve this question? I'd appreciate it sooo much since I can't find the correct answer.

What is the rotational symmetry of a wheel

Find the value of x for which abcd must be a parallelogram -9-6x x-30

Jack has a piece of red ribbon that is two times as long as his piece of blue ribbon. he says that he can use two different equation to find out how long his piece of red ribbon is compared to his piece of blue ribbon is. is he correct? explain his reasoning