home Interactive Shape
a1 a2 a3 a4
b1 b2 b3 b4
c1 c2 c3 c4
ks1 ks3 & ks4 Foundation
ks2 ks4 Higher
ks4 Higher Decide how big the unmarked angles are.
Please enable Java for an interactive construction (with Cinderella).
Angle ADE is Angle FED is Angle DEC is