(main)[3]
Prove that triangles $ADB$ and $AEC$ are congruent. State a reason for each step you give.
Mathematics 4024 · O Level · Right-angled triangles
Right-angled triangles — practice question
The diagram depicts an isosceles triangle $ABC$ with $AB = AC$. Point $D$ lies on $AC$ so that angle $ADB = 90^\circ$. Point $E$ lies on $AB$ so that angle $AEC = 90^\circ$.