Construct a triangle ABC whose perimeter 12cm and whose base angles are 65∘ and 85∘
1. Draw a line segment PQ=AB+BC+CA=12cm
2. Mark ∠LPQ=65o and ∠MQP=80o
3. Now bisect ∠LPQ and ∠MQP such that their bisector meet at A
4. Draw a perpendicular bisectors of AP and AQ i.e XY and ST intersecting PQ at B and C respectively.
5. Join AB and AC