Internal tangents to two unequal circles
Power Mechanics · Grade 10 · about 40 minutes
The inside pair of unequal circles uses a helper of radius R plus r, and the smaller radius is drawn the opposite way to the larger one.
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Other lessons in this sub-strand
- What a tangent is
- A tangent at a point on the circle
- A tangent from a point outside the circle
- Why the semicircle method works
- Tangents parallel and square to a line
- External tangents to two equal circles
- External tangents to two unequal circles
- Internal tangents to two equal circles
- Internal tangents to two unequal circles
- Tangent length
- Checking a tangent construction
- Tangency in belt and chain drives
- Tangency in gears, cams and wheels
- Why tangency matters in drawing