geometry
posted by shraddha .
Construct a triangle XYZ where YZ=4cm,ZX=4cm,YX=5cm and triangle XYZ=60°

Your triangle is overdetermined. Three sides, which are given, fully define the triangle, which in your case is isosceles. The apex angle imust be 2*sin^1 (2.5/4) = 77.36 degrees, and the other two angles are
(1/2)(18077.36) = 51.32 degrees 
Bukklkdft

=51.31

Construct a triangle XYZ in which XY=5cm,<X=60 degree and sum of other two sides is 7.6cm