In which order should the four different digits be arranged to obtain the largest 4-digit number?

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?

Lines de and ab intersect at point c what is the value x? a.12b.25c.38d.52

Explain how you would contruct a perpendicular bisector of wx using a compass and a straightedge.