Question

The diagram shows a rectangle ABCD.
Triangles ABX and BCY are equilateral.
(a) Find angle XB̂Y.
(b) Show that triangles AXD and BXY are congruent. [3]
(c) Show that angle D̂XY = 60°.
(d) Show that triangle DXY is equilateral.

Answer 1

b

Answer 2

what b?

Answer 3

hm