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From Open Educational Resources
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, 06:52, 16 January 2018
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| | ==== 8. Similar Triangles ==== | | ==== 8. Similar Triangles ==== |
| | + | [https://www.geogebra.org/m/GhGtuvV7 Similar triangles] |
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| | ==== 9. Tangents and Secants to a Circle ==== | | ==== 9. Tangents and Secants to a Circle ==== |