π Construction: Fixed pivots A(0,0) and D(AD,0). Crank AB rotates by ΞΈβ. Coupler BC connects B to C, Rocker CD connects C to D. Diagram is perfectly centered in canvas. All lines BLACK (3mm).
π Click diagram to enlarge
π Construction (Complete Triangle): From origin O, draw V_B β to crank. From tip of V_B, draw V_CB parallel to coupler. Close polygon with V_C (OβV_C). Polygon automatically centered in canvas.
π Click diagram to enlarge
π Construction (Complete Triangle): Start from O, draw a_B^n (towards crank center). Add a_CB^n parallel to coupler. Close polygon with a_C (Oβa_C). Automatically centered for optimal viewing.
π Click diagram to enlarge