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Results tagged with secondary-education
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user 3590
For questions about teaching mathematics in secondary education (in most countries approx. ages 10-18).
4
votes
What are strategies for teaching that the altitude of a right triangle creates two similar t...
If you have established that the sum of the interior angles of a triangle is always 180°, you're basically done. Each of the small triangles shares one angle with the original one; the second angle is …
- 527
22
votes
Why are triangles so prevalent in high school geometry?
TL;DR: It's not the triangles that are interesting; it's the
mathematical concepts that can best be explained by using one of the
most primitive geometrical shapes.
The reason for intensive u …
- 527