S. K. Gupta Anubhuti Gangal Class 5 Math Eleventh Chapter Geometrical Shapes

GEOMETRICAL SHAPES

TRIANGLES: A triangle is a simple closed plane figure made up of 3 line segments. It can be formed by joining three non-collinear points.

CLASSIFICATION OF TRIANGLES:

BY SIZE OF ITS ANGLES:

BY OF ITS SIDES:

REFLECTION: Reflection as you normally understand is seeing the image of something in object a mirror.

ROTATION: Rotation means turning. In geometry, rotating a figure means turning a figure about a given point, known as the center of rotation.

SYMMETRY: Symmetry is the exact likeness in a shape about a given line, point or plane.

PLANE OF SYMMETRY: The plane or that surface along which the solid is cut to give halves is called the plane of symmetry.