Example 1 a triangle PQR has vertex P (2, 2), Q (5, 7) and R (9, 4) Δ PQR format shall burn, and then rotated 180° around the image, and then write the source point P′ is Δ Q′ R′
Example 1 triangle PQR with vertices P (2, 2), Q (5, 7) and R (9, 4) Write a Δ PQR then rotated 180 ° around the bundle and then write the Aeneid ΔP'Q. 'R'
Example 1 triangle PQR the peak, P (2 2), Q (5 7), and, R (9 4) write picture Δ PQR and rotate around the 180 exit point. The origin and painting, Δ P 'Q' R '