im doing my homework and it's mostly proofs. im dying here! please help me on this one, then maybe i can work from this one to do the rest. please! reply asap...
"The diagonals of a convex quadrilateral have lengths p and q and meet at an angle x (the book actually uses the symbol phi/feeeee, but i cant type that...). Derive a formula for the area of the quadrilateral.
convex means "not regular", right? the sides aren't congruent...?
2007-02-20 18:33:31 · 2 answers · asked by krispy106 1 in Science & Mathematics ➔ Mathematics
try this link
http://www.nrich.maths.org/public/viewer.php?obj_id=437&part=solution&refpage=viewer.php
your definition of convex does not seem to be right
2007-02-20 18:44:13 · answer #1 · answered by qwert 5 · 0⤊ 0⤋
A convex polygon of any number of sides is one in which if a line is drawn to connect any two points contained within it, the line does not fall outside the polygon. If the line does, then the polygon is called concave. Here's a link explaining this:
http://mathworld.wolfram.com/ConvexPolygon.html
2007-02-22 18:54:31 · answer #2 · answered by MathBioMajor 7 · 0⤊ 0⤋