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Useful geogebra resources (view source)
Revision as of 05:49, 24 January 2018
, 05:49, 24 January 2018→9. Tangents and Secants to a Circle
==== 8. Similar Triangles ====
==== 8. Similar Triangles ====
[https://www.geogebra.org/m/GhGtuvV7 Similar triangles]
1.[https://www.geogebra.org/m/GhGtuvV7 Similar triangles]
Two triangles are said to be similar, if their corresponding angles are equal or their corresponding sides are in proportion.
Two triangles are said to be similar, if their corresponding angles are equal or their corresponding sides are in proportion.
These conditions for similarity of triangles can be explored by increasing/decreasing the length of sides, flipping/rotating the triangles given in this geogebra file.
These conditions for similarity of triangles can be explored by increasing/decreasing the length of sides, flipping/rotating the triangles given in this geogebra file.
2. [https://www.geogebra.org/m/wMa7HE9m Similar triangles exploration]
The relationships between the angles and the side length of similar shapes, their respective ratios etc., could be explored through this applet.
==== 9. Tangents and Secants to a Circle ====
==== 9. Tangents and Secants to a Circle ====
2.[https://www.geogebra.org/m/xhThfJvn Construction of tangents to a circle]
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. The equality of lengths of tangents drawn from an external point to a circle could also be verified through this construction.
This geogebra applet shows stepwise, how to construct tangents to a circle from an external point. The changes observed when the external point is moved around could be discussed.
==== 10. Mensuration ====
==== 10. Mensuration ====
