B4.2 Surface area of cone, sphere, hemisphere

B4.1 Surface area of square, rectangle – see grade 10

B4. Measurement

B3.10 Circles revision of all theorems

B3.9 Circles – theorem 9 Tan – chord

B3.8 Circles – theorem 8 Tangents from same exterior point

B3.7 Circles – theorem 7 radius perpendicular to tangent

B3.6 Circles – theorem 6 Exterior angle = interior opposite angle

B3.5 Circles – theorem 5 Opposite angles cyclic quad

B3.4 Circles – theorem 4 Angles same circle segment