Thank you to everyone who sent in solutions for this one.
Charlotte Bristou (Age 9), Natasha Dart, Abbie Sutton, Adiva Lewis & Kristina Swift (Age 10, Moorgate CP School)
Harriette Arkle, Holly West, & Ellie Jefferson (Age 11/12, The Mount School, York)
Luke Catchpole (Age 9, Tattingstone School)
Christina Ivanova (Age 11, Marlborough Primary School)

Only the two very best solutions are shown below. They are best because they use all the match- sticks in the triangles and the sizes of the angles and sides work out as they should.

Helen Buss, Lydia Anderson & Antonia Gallogly (Age 11/12, The Mount School York)

Marion Sanders (Age 9, Moorgate Primary School) and Daniel Loh (Age 10, Anglo-Chinese School, Singapore) who did this drawing.