What is the minimum number of equations needed to solve the problem?​

Select the best attribute for the angle pair formed by two parallel lines intersected by a transversal.

Louise measured the perimeter of her rectangular scrapbook to be 154 cm. if the scrapbook is 45 cm wide, how long is the scrapbook?

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square