3D Trigonometry
eleven difficulty levels, timed, click to reveal
Difficulty
cuboids and pyramids: Pythagoras twice, angles between lines, lines and planes, the sine and cosine rules; then pyramids, wedges, other prisms, right-angled tetrahedra and worded problems
1 · Pythagoras twice
2 · Lines: cuboid
3 · Lines: pyramid
4 · Planes: cuboid
5 · Planes: pyramid
6 · Sine and cosine rules
7 · Pyramids: lengths and angles
8 · Wedges
9 · Other prisms
10 · Right-angled tetrahedra
11 · No diagram: worded problems
Mixed 1–11
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