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Sticky Note
If two angles of a triangle are 50° and 40°, the third angle is?
  1. 80°
  2. 90°
  3. 100°
  4. 110°
Explanation

The sum of all angles in a triangle is 180°, so the remaining angle must be 90°.


We use the triangle angle rule

A+B+C=180∘

50∘+40∘=90∘

Related MCQs

If the length, width, and height of a rectangular cuboid are given, which formula is used to find its total surface area?
  1. LW+LH+WH
  2. 2(LW+LH+WH)
  3. Lx Wx H
  4. 2(L+W+H)
اس سوال کو وضاحت کے ساتھ پڑھیں
Find the total surface area of the rectangular cuboid?
  1. 118 m²
  2. 138 m²
  3. 158 m²
  4. 178 m²
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What is the area of a triangle having a base of 19 m and a height of 7 m?
  1. 66.5 m²
  2. 76.5 m²
  3. 56.5 m²
  4. 133 m²
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The radius of a circle is increased by 1%. If the original value of radius is 10, the percentage increase in the area of circle is?
  1. 1.15%
  2. 3.07%
  3. 2.01%
  4. None of these
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The wheel of a car is of diameter 70 cm. The number of revolutions per minute must the wheel make so as to keep a speed of 66 km/hour will be?
  1. 300
  2. 400
  3. 500
  4. None of these
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