

Geometry problems (40..49) 




problems 30..39 


problems 50..59 
40.
Calculate the area of the square.
41.
See quadrilateral ABCD with given angles.
BC=DC.
Calculate angle x.
42.
Next picture consists of circle arcs.
Prove that the red and blue shaded areas are equal.
43.
Prove that in next picture:
44.
Find formula for the blue area.
45.
Calculate the area of quadrilateral ABCD.
46.
ABCD is a square.
Calculate length x of an edge.
47.
prove that  
48.
prove that  
49.
calculate ratio  

