Quadrilaterals

Hello Wolfie105,

yes, Khan Academy does provide a course on algebraic equations for quadrilaterals. You can find it in the High school geometry course under congruence where it says theorem concerning quadrilateral properties. I hope this helps you fully prepare for your test and I wish you well in your endeavors.

If you have any additional questions feel free to ask. 

Oh nice! Thank you so much! I appreciate the help!

My pleasure.