Q. 3

Construct ΔLMN, in which M =60°, N =80° and LM+MN+NL=11cm.

Answer :

Given: Q =70°,

R = 80° and


perimeter of Δ PQR


Steps of construction:


i: Draw a line segment AB of 11cm.



ii: From point A draw a ray AD at 60° and from B draw a ray BE at 80°



iii: Draw an angle bisector of A and B, two angle bisectors intersect each other at point P.



iv: Draw a line bisector of AP and BP respectively these two-line bisectors intersect at point Q and R



v: Join PQ AND PR



vi: Δ PQR is required triangle.


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