Copyright © University of Cambridge. All rights reserved.

See all short problems arranged by curriculum topic in the short problems collection

The diagram on the right shows a rhombus FGHI and an isosceles triangle FGJ in which GF = GJ. Angle FJI = 111°.

What is the size of angle JFI?

If you liked this problem, here is an NRICH task that challenges you to use similar mathematical ideas.

*This problem is taken from the UKMT Mathematical Challenges.*