22 Aug 2014

QUESTIONS ON GEOMETRY (PART-7)

QUESTIONS ON GEOMETRY (PART-7) QUERY 61 Which of the following lengths are sides of a right triangle? A) 2.4,    3.2,    4 B) 4.3,    4.4,    4.5 C) 3.1,    4.2,    4.8 D) All of above MAHA GUPTA To be a right triangle the longest side must

Maha Gupta 0 Read More
22 Aug 2014

QUESTIONS ON GEOMETRY (PART-6)

QUESTIONS ON GEOMETRY (PART-6) QUERY 51 In a ΔABC, the sides AB and AC have been produced to D and E. Bisectors of ∠CBD and ∠BCE meet at O. If ∠A = 64, then ∠BOC is? A) 52 B) 58 C) 26 D) 112 MAHA GUPTA Just remember that a)

Maha Gupta 0 Read More
22 Aug 2014

QUESTIONS ON GEOMETRY (PART-5)

QUESTIONS ON GEOMETRY (PART-5) QUERY 41 How many sides does a regular polygon have whose interior and exterior angle are in the ratio of 2:1. A) 3 B) 5 C) 6 D) 12 MAHA GUPTA Interior and exterior angles are always supplementary i.e. INTERIOR ANGLE + EXTERIOR ANGLE = 180

Maha Gupta 0 Read More
22 Aug 2014

QUESTIONS ON GEOMETRY (PART-4)

QUESTIONS ON GEOMETRY (PART-4) QUERY 31 In this figure if DE/BC = 1/4 and area ΔADE = 10; find area ΔDEC. A) 20 B) 25 C) 30 D) 40 MAHA GUPTA Considering it a similar triangle case, as it looks, areaADE/areaDEC = AE/EC [According to similar triangle property DE/BC AE/EC]

Maha Gupta 0 Read More
22 Aug 2014

QUESTIONS ON GEOMETRY (PART-3)

QUESTIONS ON GEOMETRY (PART-3) QUERY 21 Internal bisectors of ∠B and ∠C of ΔABC intersect at O. If ∠BOC = 102, then the value of ∠BAC is ? A) 24 B) 42 C) 55 D) 60 MAHA GUPTA In ΔBOC, ∠OBC +∠OCB = 180 – ∠BOC = 180 – 102

Maha Gupta 0 Read More
22 Aug 2014

QUESTIONS ON GEOMETRY (PART-2)

QUESTIONS ON GEOMETRY (PART-2) QUERY 11 If O is the circumcentre of ΔABC and ΔOBC= 35°; then ∠BAC = ? A) 55 B) 110 C) 70 D) 35 Amit jha The circumcentre is at the intersection of the perpendicular bisectors of the triangle’s sides. It is a point in a

Maha Gupta 0 Read More
22 Aug 2014

QUESTIONS ON GEOMETRY (PART-1)

QUESTIONS ON GEOMETRY (PART-1) QUERY 1 Two medians AD and BE of triangle ABC intersect at G at right angle. If AD = 9 cm and BE = 6 cm, then BD is ? A) 2 B) 3 C) 4 D) 5 Libnitz Medians of a triangle always intersect in

Maha Gupta 1 Read More