Keep constructing triangles in the incircle of the previous triangle. What happens?
Age 14 to 16 Challenge Level:
Move the ends of the lines at points B and D around the
circle and find the relationship between the length of the
line segments PA, PB, PC, and PD. The length of each of the
line segments is recorded next to the diagram.
The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the
NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to
embed rich mathematical tasks into everyday classroom practice.