A technician often has to sketch or design ductwork and the other parts of an HVAC system. Sometimes you have to sketch the room or building you are working with. This means working with lines, angles ...

Constructions (accurate drawings) can be made using a ruler, a pair of compasses and a pencil. A line which cuts an angle into two equal side angles is called an angle bisector. In geometry a ...

Generally students are advised to read the NCERT books while preparing for board exams or any competitive exam. NCERT books are best known for explaining the concepts in a simple way for better ...

NCERT books are considered an important study resource in most of the schools in India. In the Class 9 Maths NCERT Book, important topics have been explained in easy to understand language along with ...