Find the angles of a rhombus in which a diagonal length is equal to the length of a side.

What is the value of x when x + 7 = 21?

Which statements describe the solutions to the inequality x< -20 check all that apply. there are infinite solutions. each solution is negative. each solution is positive. the solutions are both positive and negative. the solutions contain only integer values. the solutions contain rational number values.

Which angle of rotation is an angle of rotational symmetry for all figures?