الرياضيات التفاعلية المبدعة
كتاب الكتروني تفاعلي للرياضيات
Indholdsfortegnelse
- نظرية فيثاغورس
- Proof Without Words
- نظرية فيثاغورس
- Triangle Exterior Angle
- المعادلات الخطية
- حل المعادلات الخطية بيانياً
- Graph the Line
- الاحتمالات
- Pro každé přirozené číslo platí
- angles
- Polygons: Exterior Angles
- Polygons: Exterior Angles - REVAMPED
Proof Without Words
Drag the points in the sketch below.[br]What do you notice? What does this prove? How does this prove it?
حل المعادلات الخطية بيانياً
حل المعادلات الخطية بيانياً[br]حلي المعادلة التالية بيانيا
Pro každé přirozené číslo platí
Polygons: Exterior Angles
The exterior angles of a triangle, quadrilateral, and pentagon are shown, respectively, in the applets below. [br][br]You can control the size of a colored exterior angle by using the slider with matching color. [br]Feel free to move the vertices of these polygons anywhere you'd like. [br][br][b]Note:[/b] [br]For the [b]quadrilateral[/b] & [b]pentagon[/b], the last two applets work best if these polygons are kept [b]convex.[/b][br]If you don't remember what this term means, [url=https://www.geogebra.org/m/knnPDMR3]click here for a refresher[/url].
Exterior Angles of a Triangle
Exterior Angles of a Quadrilateral
Exterior Angles of a Pentagon
What do you notice? What is common about the measures of the exterior angles of any one of these polygons?
Do you think what you've observed for the triangle, quadrilateral, and pentagon above will also hold true for a hexagon, heptagon, and octagon? [br][br]Create a new GeoGebra file and do some investigating to informally test your hypotheses!