💥 Q 25: Prep 3 Geometry Question Bank T1

Show the type of the triangle according to its angles if its vertices are:
\( A(1, -1) \), \( B(2, 1) \) and \( C(-3, -2) \)

Acute-angled triangle

Right-angled triangle

Equilateral triangle

Obtuse-angled triangle at A

\( \therefore (BC)^2 > (AB)^2 + (AC)^2 \)
\( \therefore A, B \) and \( C \) are the vertices of an obtuse-angled triangle at \( A \)

MR/Nasef.N