CBSE Exam Paper

Integers  1. Use + or – sign to represent the following: (a) 5 kg decrease in weight (b) 1000 m above sea level (c) Profit of 3000 (d) A withdrawal of 2300 from the bank. (e) A submarine is moving at a depth of five hundred metre below sea level. (f) Gaining a weight of 2 kg. (g) Going 600 metre above sea level. (h) Temperature six degree Celsius above 0 degree Celsius. (i) An aeroplane is flying at a height three thousand five hundred metre above the ground. (j) Increase in weight 8kg (k) 30 km north (l) 80 m east (m) Loss of Rs 700 (n) 100 m above sea level (o) An aeroplane is flying at a height two thousand metre above the ground. (p) A submarine is moving at a depth, eight hundred metre below the sea level. (q) A deposit of rupees two hundred. (r) Withdrawal of rupees seven hundred. (s) Profit of 20 (t) Second floor below the ground level. (u) Going 4 km towards east. 2. Find the additive inverse of the following. (a) 16         (b) – 25    ...

NCERT Class 8 Maths Chapter 4 Quadrilaterals Solutions Question Answer Ganita Prakash Class 8 Chapter 4 Solutions Quadrilaterals NCERT Class 8 Maths Ganita Prakash Chapter 4 Quadrilaterals Solutions Question Answer 4.1 Rectangles and Squares Figure It Out (Page 94) Q. 1. Find all the other angles inside the following rectangles. Sol. (i) The given rectangle is ABCD. We have ∠1 = 30° ∠1 + ∠2 = 90° ∴ ∠2 = 90° – ∠1              = 90° – 30°              = 60°. MD = MA ⇒ ∠3 = ∠2 = 60° ∠3 + ∠Z4 = 90° ∴ ∠4 = 90° – ∠3              = 90°- 60°               = 30° MC = MD ⇒ ∠5 = ∠4 = 30° ∠5 + ∠6 = 90° ∴ ∠6 = 90° – ∠5              = 90° – 30°               = 60° MB = MC ⇒ ∠7 = ∠6 = 60° MB = MA ⇒ ∠8 = ∠1 = 30° In ∆AMB,  we have ∠A + ∠M + ∠B = 180°.(by ASP...

Rectangle : - A parallelogram whose sides are equal and parallelogram with all right angle is called Rectangle.  आयत  :- एक ऐसा समांतर चतुर्भुज जिसकी सम्मुख भुजाएं बराबर और समांतर तथा सभी कोण समकोण हो आयत कहलाता है।  If AB || DC and AD || BC so that ABCD is a ||gm.  यदि AB || DC व  AD || BC तो ABCD, एक ||gm होगा।  1★ Opposite sides of a Rectangle are parallel.   ★ आयत की संम्मुख भुजाएं समांतर होती है।                  AB || DC and AD || BC 2★ Opposite sides of a Rectangle are equals.   ★ आयत की संम्मुख भुजाएं बराबर होती है।                  AB = DC and AD = BC 3★ Opposite angles of a Rectangle are equals.   ★ आयत की संम्मुख कोण बराबर होती है।                  ∠A = ∠C and ∠D = ∠B 4★ All angles of a Rectangle are equal and 90⁰  ∠A  = ∠b  = ∠C  = ∠D = 90⁰     ★ तो आयत ...