Class 9

These activities are part of the class IXth syllabus under CBSE curriculam

Properties of parallelogram To explore similarities and differences in the properties with respect to the diagonal of a parallelogram. | |

Area of circle To show that the area of circle is half the product of its circumference and radius. | |

Solving simultaneous equations To solve simultaneous linear equations in two variables using LCM method and substitution method. | |

Circumcentre of a triangle To show that the perpendicular bisectors of the sides of a triangle concur at a point (called the circumcentre) | |

Area of triangle To show that the area of a triangle is half the product of the base and the height. | |

The quadrilateral formed by the mid-points of a quadrilateral To show that the figure obtained by joining the mid points of consecutive sides of the quadrilateral is a parallelogram. | |

Area of trapezium To show that the area of trapezium is equal to half the product of its altitude and sum of its parallel sides. | |

UI Template Maths template | |

Incentre of a triangle To show that the internal bisectors of the angles of a triangle concur at a point (called the incentre), which always lies inside the triangle. | |

Mid-point theorem To show that the line segment connecting the mid-points of two sides of a triangle is parallel to the third side and is congruent to one half of the third side. | |

Centroid of a triangle To show that medians of a circle concur at a point (called centroid) and which always lies inside the triangle. | |

Area of rhombus To show that the area of rhombus is half of product of its diagonals. | |

Area of parallelogram To show that the area of parallelogram is product of its base and height. |