# Solar Energy Essay

528 Words3 Pages
CBSE TEST PAPER-03 CLASS - IX Mathematics (Quadrilateral) 1. In the fig ABCD is a Parallelogram. The values of x and y are (a) 30, 35 (b) 45, 30 (c) 45, 45 (d) 55, 35 2. D 0 C 0 [1] (y + ( ) 80 x+ ) 10 x(3 25 ) 0 A B In fig if DE=8cm and D is the mid Point of AB, then the true statement is (a) AB=AC (b) DE||BC (c) E is not mid Point of AC (d) DE ≠ BC A [1] E D B C 3. The sides of a quadrilateral extended in order to form exterior angler. The sum [1] of these exterior angle is (a) 180° (b) 270° (c) 90° (d) 360° ABCD is rhombus with ∠ABC = 40°. The measure of ∠ACD is (a) 90° (b) 20° (c) 40° (d) 70° In fig AD is a median of ∆ABC , E is mid-Point of AD.BE produced meet AC at F. Show that AF = 1 AC 3 B A 4. [1] 5. [2] F E D C 6. 7. Prove that a quadrilateral is a parallelogram if the diagonals bisect each other. In fig ABCD is a Parallelogram. AP and CQ are Perpendiculars from the Vertices A and C on diagonal BD. Show that (i) ∆APB ≅ ∆CQD (ii) AP = CQ C [2] [2] D P Q B A Material downloaded from http://myCBSEguide.com and http://onlineteachers.co.in Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks 8. 9. ABCD is a Parallelogram E and F are the mid-Points of BC and AD respectively. [2] Show that the segments BF and DE trisect the diagonal AC. In fig ABCD is a quadrilateral P,Q,R and S are the D R C [3] mid Points of the sides AB, BC,CD and DA, AC is diagonal. Show that (i) SR||AC (ii) PQ=SR (iii) PQRS is a parallelogram (iv) PR and SQ bisect each other 10. 11. In ∆ABC , D, E , F are respectively the mid-Paints of sides AB,DC and CA. show [3] that ∆ABC is divided into four congruent triangles by Joining D,E,F. ABCD is a Parallelogram is which P and Q are mid-points of apposite sides AB [3] and CD. If AQ intersect DP at S BQ intersects CP at