Make a 2D triangle first
Make a 2D triangle first
In 3D questions, the formulas are the same as in 2D right-angled triangles. The main skill is spotting which flat triangle you need inside the solid.
Make a 2D triangle first
Make a 2D triangle first
In 3D questions, the formulas are the same as in 2D right-angled triangles. The main skill is spotting which flat triangle you need inside the solid.