Level 20

Author:Colin Beveridge

Level 20 of http://euclidthegame.org/Level20.html asks you to construct the outer tangent to two given circles (here, a, with centre A; and b, with centre B). Here's how I'd do it.

New Resources

Constructing the Copy of an Angle + Angles Activities
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GeoGebra around GeoGebra
အခြေခံ data အခေါ်အဝေါ်များ
Tube at distance of a 3D curve.

Discover Resources

Section 4.5 Celine
A Left
Construct Congruent Chords
S-S-A Triangle Congruence Theorem Disproof

Discover Topics

Polynomial Functions
Symmetry
Orthocenter
Linear Functions
Linear Programming or Linear Optimization