Answer:
Hi,
i shell only answer the 2 last questions
Explanation:
Q10: answer D
the method to solve is on the picture:
1) draw the center of the rectangle (O)
2) put a point A=(-4,5)
3) search the point A' (image of the point A by central symetry of O
4) draw the circle of center O passing through A (diagonals of a rectangle are equal)
5) draw the perpendicular of [AA'] passing through O (bissector perpendicular ? médiatrice in French)
intersection with the circle gives others vertex.
We may also use analytic geometry .
Q11: 12° since
2x+4+62=90 => 2x=90-62-4 => x=12