Question

Construct triangle ABC in which angle B=45 , angle C=60 and AB+BC+CA=12cm

Answer 1

Step-by-step explanation:

Step 1: Draw a line segment PQ ( = AB + BC + CA ) = 11cm.

Step 2: Draw an angle of 60° at P and an angle of 45° at Q.

Step 3: Bisect ∠P and ∠Q. Let the bisectors of ∠P and ∠Q intersect in A.

Step 4: Draw perpendicular bisector DE of AP which intersect PQ in B and FG of AQ which intersect PQ in C.

Step 5: Join AB and AC.

∴ ΔABC is the required triangle.

Answer 2

∆ABC is required triangle.