Interior and Exterior Angles of Polygons — الرياضيات الصف الثاني الإعدادي لغات

درس «Interior and Exterior Angles of Polygons» فى مادة الرياضيات لـالصف الثاني الإعدادي لغات من وحدة «Geometry». This lesson covers the properties of interior and exterior angles of convex polygons. It derives the formula for the sum of interior angles (n-2)×180°, and the sum of exterior angles (360°). The lesson also covers regular polygons, including the formula for the measure of each interior angle and exterior angle, and the formula for the number of diagonals (n(n-3)/2). هتتعلم فى الدرس ده: Sum of interior angles of a convex polygon = (n-2)×180°.، Sum of exterior angles of a convex polygon (one at each vertex) = 360°.، In a regular polygon, all sides and angles are equal.، Measure...

الدرس ده من وحدة «Geometry» فى مادة الرياضيات لـالصف الثاني الإعدادي لغات على منصة دروسات.

الدرس متاح بالاشتراك: ترم كامل أو المادة لوحدها.

ملخص الدرس

This lesson covers the properties of interior and exterior angles of convex polygons. It derives the formula for the sum of interior angles (n-2)×180°, and the sum of exterior angles (360°). The lesson also covers regular polygons, including the formula for the measure of each interior angle and exterior angle, and the formula for the number of diagonals (n(n-3)/2).

هتتعلم إيه فى الدرس ده

• Sum of interior angles of a convex polygon = (n-2)×180°.
• Sum of exterior angles of a convex polygon (one at each vertex) = 360°.
• In a regular polygon, all sides and angles are equal.
• Measure of each interior angle of a regular n-gon = ((n-2)×180°)/n.
• Measure of each exterior angle of a regular n-gon = 360°/n.
• Number of diagonals of an n-gon = n(n-3)/2.