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Lines And Angles

Question
CBSEENMA9002459
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An angle which is exactly equal to 180° is called
  • a right angle
  • a straight angle
  • an acute angle
  • an obtuse angle

Solution

B.

a straight angle

Some More Questions From Lines and Angles Chapter

In figure, find the value of x.

In figure, if ∠POR and ∠QOR form a linear pair and a - b = 80° then find the value of a and b.

What value of x would make XOY a line if ∠XOZ = 7x + 20° and ∠YOZ = 3x in figure.

Two supplementary angles are in the ratio 4 : 5. Find the angles.

 In figure, lines AB and CD intersect at O. If ∠AOD : ∠DOC = 4 : 5 then find ∠COB.

An angle is equal to five times of its complement. Find the measure of the angle.

In figure, lines I and m intersect each other at O. If x = 40°, then, find the values of y, z and w.

If OA, OB. OC and OD are the rays such that ∠AOB = ∠COD = 150°, ∠BOC = 30° and ∠AOD = 30°. Is it true that AOC and BOD are straight lines? Justify your answer.

In figure, angles x and y are supplementary angles. If ∠x = 110°, find the value of y.

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