Practice Question and Answer

Q:

An isosceles triangle ABC is right angled at B.D is a point inside the triangle ABC. P and Q are the feet of the perpendiculars drawn from D on the side AB and AC respectively of ∆ ABC. If AP = a cm, AQ = b cm and ∠BAD = 15°, sin 75°=

816 0

  • 1
    $${2b\over \sqrt {3} a}\ $$
    Correct
    Wrong
  • 2
    $${a\over 2b} $$
    Correct
    Wrong
  • 3
    $${ \sqrt {3} a\over 2b} $$
    Correct
    Wrong
  • 4
    $${ 2b \over \sqrt {3} a} $$
    Correct
    Wrong
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Answer : 3. "$${ \sqrt {3} a\over 2b} $$"

Q:

ABC is an isosceles triangle with AB = AC, A circle through B touching AC at the middle point of Q, intersects AB at P. Then AP : AB is : 

1114 0

  • 1
    3 : 5
    Correct
    Wrong
  • 2
    1 : 4
    Correct
    Wrong
  • 3
    2 : 3
    Correct
    Wrong
  • 4
    4 : 1
    Correct
    Wrong
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Answer : 2. "1 : 4"

Q:

ABC is an isosceles triangle such that AB = AC and ∠B = 35°. AD is the median to the base BC. Then ∠BAD is

824 0

  • 1
    70°
    Correct
    Wrong
  • 2
    35°
    Correct
    Wrong
  • 3
    110°
    Correct
    Wrong
  • 4
    55°
    Correct
    Wrong
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Answer : 3. "110°"

Q:

If ∆ABC is an isosceles triangle with ∠C = 90° and AC = 5 cm then AB is : 

1386 0

  • 1
    5√2 cm
    Correct
    Wrong
  • 2
    2.5 cm
    Correct
    Wrong
  • 3
    5 cm
    Correct
    Wrong
  • 4
    10 cm
    Correct
    Wrong
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Answer : 1. "5√2 cm "

Q:

The base and altitude of a right angled triangle are 12 cm and 5 cm respectively. The perpendicular distance of its hypotenuse from the opposite vertex is

602 0

  • 1
    $$ 4{4\over 13} $$ cm
    Correct
    Wrong
  • 2
    $$ 4{8\over 13} $$ cm
    Correct
    Wrong
  • 3
    5 cm
    Correct
    Wrong
  • 4
    7 cm
    Correct
    Wrong
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Answer : 2. "$$ 4{8\over 13} $$ cm"

Q:

From a point within an equilateral triangle, perpendiculars drawn to the three sides, are 6 cm, 7 cm and 8 cm respectively. the length of the side of the triangle is:

647 0

  • 1
    7 cm
    Correct
    Wrong
  • 2
    10.5 cm
    Correct
    Wrong
  • 3
    $${14 \sqrt { 3}} $$ cm
    Correct
    Wrong
  • 4
    $${14 \sqrt { 3}}\over 3 $$ cm
    Correct
    Wrong
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Answer : 1. "7 cm "

Q:

The sides of a triangle are in the ratio 3 : 4 : 5. The measure of the largest angle of the triangle is

628 0

  • 1
    60°
    Correct
    Wrong
  • 2
    90°
    Correct
    Wrong
  • 3
    120°
    Correct
    Wrong
  • 4
    150°
    Correct
    Wrong
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Answer : 2. "90° "

Q:

The length of the perpendiculars drawn from any point in the interior of an equilateral triangle to the respective sides are p1 , p2 and p3 . The length of each side of the triangle is

675 0

  • 1
    $${2\over \sqrt { 3}}+(p_1+p_2+p_3) $$
    Correct
    Wrong
  • 2
    $${1\over \sqrt { 3}}+(p_1+p_2+p_3) $$
    Correct
    Wrong
  • 3
    $${1\over \sqrt { 3}}+(p_1+p_2+p_3) $$
    Correct
    Wrong
  • 4
    $${4\over \sqrt { 3}}+(p_1+p_2+p_3) $$
    Correct
    Wrong
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Answer : 1. "$${2\over \sqrt { 3}}+(p_1+p_2+p_3) $$ "

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