Geometry & Mensuration

Volume and surface area calculations for spheres, hemispheres, cylindrical and spherical shells for Class IX mathematics

enlargement and scale drawing

Introduction to curves including basic definitions, types (open/closed curves), and properties of circles

Learn about open and closed curves, identify them in everyday objects, and understand their basic properties including endpoints and how shapes like circles, triangles, and rectangles are examples of closed curves.

Tests understanding of enlargement, scale factors, similar figures, and proportional relationships in geometry

similarity as a size transformation

dilation

surface area and volume of sphere

basic proportionality theorem and its converse

Questions about geometric reflections on coordinate axes, including properties of mirror images, coordinate transformations, and symmetry in the XY plane

polyhedrons

construction of special quadrilaterals

Practice arithmetic operations (addition, subtraction, multiplication, division) on measurements of weight, time, and length including unit conversions

Volume calculations for cubes, cuboids, cylinders, cones, and spheres including practical problems

Practice calculating volumes of prisms and pyramids, including various base shapes, frustums, and understanding the relationship between prism and pyramid volumes.