Vectors in Space — Grade 12
វិចទ័រក្នុងលំហ — the whole chapter in one page: coordinates and distance, the dot and cross product, equations of lines and planes, areas and volumes, the distance formulas and the sphere, then 43 multiple-choice questions. Use the EN ⇄ ខ្មែរ switch in the header and the whole page changes language, not just the buttons.
Lesson + 43 multiple choice
Khmer & English
Dot & cross product · lines · planes · spheres
Printable
Prepared by
ណាត ប៊ុនឆ័យ · Nat Bunchhai
Alpha Academy Cambodia
Space geometry rewards students who draw
Most marks lost here come from picturing the figure wrongly, not from the algebra. Our maths tutors work through it with the student, line by line and plane by plane — at home, at our office or online.