Question

construct a triangle if its perimeter is 10.4 cm and two angles are 45 degree and 120 degree

Answer 1

first make a line segment AB of 10.4 cm

At A make an angle PAB of 45 and bisect it.

At B make an angle QBA of 60 degrees.

Let AP and BQ intersect each other at X.

Make perpendicular bisectors of XA.

mark the pt. where they meet AB as Y.

Now make the perpendicular bisector of BQ .

mark the where they meet AB as Z .

Join XY and ZY.

XYZ is the required triangle