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Terry Tam

  • Equilateral Triangle on 3 Concentric Circles

    Activity

    Terry Tam

  • Terry's Maths Collections

    Book

    Terry Tam

  • Shortest-perimeter Inscribed Triangle

    Activity

    Terry Tam

  • Why same areas? (3)

    Activity

    Terry Tam

  • Why same areas? (2)

    Activity

    Terry Tam

  • Why same areas?

    Activity

    Terry Tam

  • Intersecting Chords Theorem and Secant-Tangent Theorem

    Activity

    Terry Tam

  • Why ratio difference is the same?

    Activity

    Terry Tam

  • Why 6 points are concyclic?

    Activity

    Terry Tam

  • Why parallelogram is always formed?

    Activity

    Terry Tam

  • Napoleon Equilateral Triangles

    Activity

    Terry Tam

  • Ptolemy Theorem

    Activity

    Terry Tam

  • Obtaining Fractions via Folding Paper

    Activity

    Terry Tam

  • Incircle and Excircles

    Activity

    Terry Tam

  • Inner/Outer Triangles

    Activity

    Terry Tam

  • Viviani's Theorem

    Activity

    Terry Tam

  • QM-AM-GM-HM Inequality

    Activity

    Terry Tam

  • How to copy a line segment with a collapsing compass?

    Activity

    Terry Tam

  • All about Pythagoras theorem...

    Activity

    Terry Tam

  • Why always a circle tangent?

    Activity

    Terry Tam

  • Where am I?

    Activity

    Terry Tam

  • Morley Equilateral Triangles

    Activity

    Terry Tam

  • Equilateral triangles on a triangle

    Activity

    Terry Tam

  • Simson's line

    Activity

    Terry Tam