Question

A carpenter is building a frame. Which values of a and b will ensure that the sides of the finshed frame are parallel? A=40 and b=60, a=45 and b=50, a=30 and b=60, a=40 and b=40 I think it would be a=30 and b=60 90 degrees?

Answer 1

I do believe you are correct because if you connect the shapes, you would get complementary angles (90 degrees) and 30 and 60 are the only combinations there that make 90.