don steward
mathematics teaching 10 ~ 16

Friday, 8 December 2017

equable trapeziums

beginning to appreciate that all tangential polygons with an incircle radius = 2 are equable

set A = P and solve the equation
ignore the heights from the previous task

work out the missing lengths using the tangents to circle property
the expressions need to be simplified
the areas of the four triangles
add up to the area of the trapezium

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