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    What is a cyclic quadrilateral?

    Module 2 Day 8 Challenge Part 4
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    • The Blade Dancer
      The Blade Dancer M0★ M1★ M2★ M3★ M4 M5 last edited by debbie

      Module 2 Week 2 Day 8 Challenge Part 4

      What is a cyclic quadrilateral?

      debbie 1 Reply Last reply Reply Quote 2
      • debbie
        debbie ADMIN M0★ M1 M5 @The Blade Dancer last edited by

        @TSS-Graviser A cyclic quadrilateral is a 4-sided figure that can be drawn inside a circle with its corners touching the circle, like this:

        M2W2-cyclic-quad.png

        You'll see in the lesson that opposite angles of the cyclic quadrilateral add up to \( 180^{\circ}\). There is also something else called Ptolemy's Theorem, which we don't learn in Module 2, but later on in Module 8 (which isn't available yet). This says that the sum of the products of pairs of sides equals the product of the diagonals. Cyclic quadrilaterals are coooool!

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