Question 24
Equilateral triangle ABC is divided into congruent small triangles and has area 16. Find the area of the dark triangle, answering every subquestion.
1. How many small triangles are there, and what is each one’s area?
2. Divide the dark triangle into the red, green and yellow triangles shown. How many small-triangle areas equal each coloured part? What is the total dark area?
1. How many small triangles are there, and what is each one’s area?
2. Divide the dark triangle into the red, green and yellow triangles shown. How many small-triangle areas equal each coloured part? What is the total dark area?