If quadrangles have all equal angles, are they congruent?

Δabc is reflected across line l to form δ alblcl, and a¯¯¯al¯¯¯¯ intersects line l at point d. which equation is not necessarily true?

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9