Triangle — الرياضيات الصف الأول الإعدادي لغات

درس «Triangle» فى مادة الرياضيات لـالصف الأول الإعدادي لغات من وحدة «Geometry & Measurement». This lesson explores the fundamental properties of triangles. It teaches that the sum of the interior angles of any triangle is always 180°. It defines the exterior angle of a triangle and establishes the rule that its measure is equal to the sum of the two non-adjacent interior angles. The lesson also introduces the triangle inequality theorem, which states that the sum of the lengths of any two sides must be greater than the length of the third side. These rules are used to solve for unknown angles and side lengths. هتتعلم فى الدرس ده: The sum of the measures of the interior angles of a...

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

الدرس متاح بالاشتراك: ترم كامل أو المادة لوحدها.

ملخص الدرس

This lesson explores the fundamental properties of triangles. It teaches that the sum of the interior angles of any triangle is always 180°. It defines the exterior angle of a triangle and establishes the rule that its measure is equal to the sum of the two non-adjacent interior angles. The lesson also introduces the triangle inequality theorem, which states that the sum of the lengths of any two sides must be greater than the length of the third side. These rules are used to solve for unknown angles and side lengths.

هتتعلم إيه فى الدرس ده

• The sum of the measures of the interior angles of a triangle is always 180°.
• The measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles.
• The triangle inequality theorem states that the sum of any two side lengths must be greater than the third side length.
• These properties are used to find unknown angles and to determine if a triangle can be formed from given side lengths.