Question 19
Find the area of triangle $ABC$ with $A(-3,6)$, $B(-1,3)$, $C(1,-5)$.
HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 04 Question 19
HKIMO · HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 04
HKIMO · HKIMO 2026 THPT (Grades 10–12 shared) National Preliminary Set 04