15.
M = (1, 1)
N = (6, 1)
P = (7, 4)
Q = (2, 4)
dMN = √(6 — 1)2 + (1 — 1)2 = √25 + 0 = √25 = 5
dNP = √(7 — 6)2 + (4 — 1)2 = √1 + 9 = √10
dPQ = √(2 — 7)2 + (4 — 4)2 = √25 + 0 = √25 = 5
dMQ = √(2 — 1)2 + (4 — 1)2 = √1 + 9 = √10
dMP = √(7 — 1)2 + (4 — 1)2 = √36 + 9 = √45
19.
AB = BC
AM = MC
BM = 160
AC = 80
AM = MC = 80/2 = 40
MO = 160 · 1/3 = 160/3
AO = √402 + (160/3)2 = √1600 + 25600/9 = √1440 + 25600/9 = 40000/9 = 200/3
KO = 200/3 : 2 = 100/3
AK = 100/3 + 200/3 = 300/3 = 100
Կարինե Դադոյանի Ուսումնական Բլոգ 