Question 15
A triangle has area 50 cm². Each side is divided into five equal parts and some pairs of division points are joined as shown. What is the total area of the shaded regions, in square centimetres?
Use the equal-division diagram as drawn: each side has five equal parts, and the interior segments follow the corresponding parallel triangular grid.
Use the equal-division diagram as drawn: each side has five equal parts, and the interior segments follow the corresponding parallel triangular grid.