Class 6 Maths Ch 6 Perimeter and Area | Why a triangle takes exactly half the rectangle around it

A triangle takes exactly half the rectangle around it — whatever shape the triangle is. That needs an argument, not a formula. Full topic page, with the transcript and the exact book reference: https://prepshorts.com/learn/class-6/... Why a triangle takes exactly half the rectangle around it — the argument, not the formula. NCERT Class 6 Maths (Ganita Prakash), Chapter 6 “Perimeter and Area”, §6.3 pp.142–144 and the Summary on p.150. CHAPTERS 0:00 One cut, two pieces 0:47 Do they really match? The test, repeated 1:34 From “they match” to “each one is half” 2:12 A rectangle and a triangle that look nothing alike 3:16 Onto the grid: rectangle ABCD and its twenty squares 3:58 Triangle BAD — the corner case, done by halving 4:31 Triangle ABE — the top corner has moved 5:10 Dropping the line to F, and the two rectangles it makes 6:00 Half plus half of the parts is half of the whole 6:45 Two triangles that look different and measure the same 7:40 The conclusion the book leaves you to write 8:42 Using it: figures cut into rectangles and triangles IN THE BOOK Class 6 Mathematics, Chapter 6, "Perimeter and Area". NCERT Ganita Prakash — Textbook of Mathematics for Grade 6, First Edition August 2024 (NCF-SE 2023). ABOUT PREPSHORTS One short video per NCERT topic, with the book open beside it. Not worked answers to the exercises — the reason each result has to hold, which is the half that carries into a question you have not seen before. The full library is 708 videos across Classes 6 to 12, about 147 hours in all. 88 are free to watch, one opening every chapter. https://prepshorts.com/?utm_source=yo...