A (-40; 0)
C (40; 0)
B (0; 160)
C1
DAB = √(x1 – x2)2 + (y1 – y2)2
CC1 = √(40 + 20)2 + (0 + 80)2 =
= √3600 + 6400 = √10000 = 100
DAB = √(x1 – x2)2 + (y1 – y2)2
4 + c/2 = 5
C1 = -4 + 0/2 = -2
DAB = √(-2 * 10)2 + (5 – 0)2 =
= √144 + 25 = √164 = 13
C1 = 0 + 10/2 = 5
Hayk Vaghoyan 