Sum of Interior Angles of a Polygon

Author:現代中學數學 Modern Secondary Mathematics

Topic:Angles, Plane Figures or Shapes, Polygons

Investigate the sum of interior angles of a polygon by observing the number of triangles the polygon can be divided into. (for use with P.4.10 and P.4.11 of Book 1B)

New Resources

Nikmati Keunggulan Di Bandar Judi Terpercaya
Perimeter of a Rectangle with Unknown Sides
Open Education 2026
Tangent Plane to a Sphere
巧算長方形周界

Discover Resources

CCSS IP Math I 5.6.4 Example 4
DOTTED PATTERN 2
Kolasa GeoGebra Project
Pythagorean Theorem Proof Without Words
Kalon minaret - mu

Discover Topics

Statistics
Similar Triangles
Multiplication
Power Functions
Reflection