Imporatant question

CLASS-IX Prove that cyclic parallelogram is rectangle. angles of a quadrilateral are in the ratio 2:3:4:6.find the angles. which of the following is not congruence criteria-  ASA SSS AAA RHS prove that perpendicular drawn from the center to chord bisects the chord.

CLASS-IX REVISION QUESTION Construct the following angle- 75o 105o 45/2 Construct a triangle whose perimeter is 13 cm and <B=45 and <C=60 . If a parallelogram and a triangle lie on same base and between same parallels then prove that area of parallelogram is double of area of triangle. Prove that equal chords of a circle subtend equal angle at the center.

CLASS-IX DATE:3-1-2020 REVISION QUESTION FOR PT-II 1-MARK QUESTION A point whose distance from the centre of the circle is less than the radius of the circle lies inside/outside/boundary of the circle. The sides of a triangle are in the ratio 3:4:5 .If its perimeter is 36 cm,find its area? A chord of a circle is equal to its radius.Find the angle subtended by the chord at major/minor arc. The base and hypotenuse of a right angled triangle are 24 cm and 26 cm respectively.find the area of triangle. The area of an equilateral triangle is 4.what is its side. 2-MARK QUESTION F ind the area of an isosceles triangle with two equal sides as 5 cm each and the third side is 8 cm. In a parallelogram ABCD ,AE is perpendicular to DC and CF is perpendicular to AD.If AB=10 cm,AE=6 cm and CF= 8 cm then find the length of AD. The sides of a triangular   plot are in the ratio 3:5:7 and its perimeter is 300 cm .Find its area. Show that median of a triangle divide it into two ...

CLASS-VI CHAPTER-KNOWING OUR NUMBER Starting from the smallest 8-digit number, write the next five numbers in ascending order. None of these 10000000, 10000001, 10000002, 10000003, 10000004 10000001, 10000002, 10000003, 10000004, 10000005 10000004, 10000003, 10000002, 10000001, 10000000 Which is greatest? 6895, 23787, 24569, 24657 24567 23787 2 4657 68 95 Insert commas suitably and write the names according to International System of Numeration: 78921092 78,921,092 None of these 7 8,92,10,92 7,89,21,092 What is the sum of 567 and 843? 8 43 1 500 1 410 567 Identify the greatest and the smallest in 2853, 7691, 9999, 12002, 124. 12202, 124 None of these 1 2202, 7691 9999, 124 Match the following- Column I Column II a. Estimation p. International System b. Billion, Million q. Rough Calculation c. Crore r. 90,030 d. Nine Thousand Thirty s. Indian System Fill in the blanks: 1 million = _____ hundred thousand. 1 crore = _____ ten lakh. ...

CLASS:8 TOPIC-MENSURATION 1. The volume of a cube is 64 cm 3. Its surface area is (a) 16 cm2 (b) 64 cm2 (c) 96 cm2 (d) 128 cm 2. If the radius of a cylinder is tripled but its curved surface area is unchanged, then its height wilbe (a) tripled (b) constant (c) one sixth (d) one third  3. How many small cubes with edge of 20 cm each can be just accommodated in a cubical box of 2 m edge? (a) 10 (b) 100 (c) 1000 (d) 10000 4. The volume of a cylinder whose radius r is equal to its height is (a) 1 4 πr3 (b) πr 3 32 (c) πr3 (d) 3 8 pr 5. The volume of a cube whose edge is 3x is (a) 27x3 (b) 9x3 (c) 6x3 (d) 3x3  6. The figure ABCD is a quadrilateral in which AB = CD and BC = AD. Its area is (a) 72 cm2 (b) 36 cm2 (c) 24 cm2 (d) 18 cm2 7. What is the area of the rhombus ABCD below if AC = 6 cm, and BE = 4cm? (a) 36 cm2 (b) 16 cm2 (c) 24 cm2 (d) 13 cm2 

CLASS-9 chapter-circle HOTS 1.    In the figure, OD is perpendicular to chord AB of a circle whose centre is O. If BC is a diameter; prove that CA = 2OD. 2.    l is a line intersecting two concentric circles having common centre O, at A, B, C and D. Prove that AB = CD. 3.    AB and CD are equal chords of a circle whose centre is O. When produced, these chords meet at E. Prove that EB = ED. 4.    If O be the centre of the circle, find the value of �x� in each of the following figures. 5.    Prove that equal chords of a circle subtend equal angles at the centre. 6.    The line drawn through the centre of a circle to bisect a chord is perpendicular to the chord. Prove it. 7.    Prove that equal chords of a circle (or congruent circles) are equidistant from the centre (or centres). 8.    In the figure, OD is perpendicular ...