vidéo : 2ème année : pyramide et cône de révolution الثانية اعدادي : الهرم والمخروط الدوراني

Here are the links to the mathematics lessons for first year of secondary school (second semester): - Lesson 1: Development and factorization - Lesson 2: Equations of the first degree - Lesson 3: Central symmetry - Lesson 4: Parallelogram - Lesson 5: Solving problems - Lesson 6: Special quadrilaterals - Lesson 7: Parallels and a transversal - Lesson 8: Circle - Lesson 9: Right prism and cylinder - Lesson 10: Graduated straight line and reference in the plane - Lesson 11: Proportionality Here are the links to the mathematics lessons for second year of secondary school (second semester): - Lesson 1: Literal calculation - Lesson 2: Important lines - Lesson 3: Equations - Lesson 4: Order and operations - Lesson 5: Right triangle and circle - Lesson 6: Vectors and translations - Lesson 7: Proportionality and linear function