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Useful geogebra resources (view source)
Revision as of 10:32, 24 January 2018
, 10:32, 24 January 2018→9. Tangents and Secants to a Circle
==== 9. Tangents and Secants to a Circle ====
==== 9. Tangents and Secants to a Circle ====
[https://www.geogebra.org/m/XdmMxGVU Secant and Tangent to a Circle]
1.[https://www.geogebra.org/m/XdmMxGVU Secant and Tangent to a Circle]
A straight line which intersects a circle at two distinct points is called a secant. A straight line that touches a circle at only one point is called a tangent.
A straight line which intersects a circle at two distinct points is called a secant. A straight line that touches a circle at only one point is called a tangent.
Either of the points, B or C on the circumference of the circle can moved in this geogebra applet to discuss tangent, secant and chord, and some of their properties.
Either of the points, B or C on the circumference of the circle can moved in this geogebra applet to discuss tangent, secant and chord, and some of their properties.
2.[https://www.geogebra.org/m/xhThfJvn Construction of tangents to a circle]
This geogebra applet shows stepwise, how to construct tangents to a circle from an external point
==== 10. Mensuration ====
==== 10. Mensuration ====