Check the given below are adjacent angles? Or not? Note: ∠ c , ∠ d are right angles.

Two angles are adjacent when they have a common side and a common vertex (corner point) and don't overlap. Given, In the above figure, we have two angles c and d . Given, c and d are right angles. Here c and d have common vertex and common arm. So, given angles c and d are adjacent angles.

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Mathematics Class 7>Chapter 4 - Lines and Angles>Exercise - 3>Q 4

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Two angles are equal and supplementary to each other. Find them.

Important Questions on Lines and Angles

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Mathematics Class 7>Chapter 4 - Lines and Angles>Exercise - 4>Q 1

Check the given below are adjacent angles? Or not?
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Note:

∠ c, ∠ d

are right angles.

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Mathematics Class 7>Chapter 4 - Lines and Angles>Do This>Q 1

Draw two lines

\overset{\leftrightarrow}{A B}

and

\overset{\leftrightarrow}{C D}

such that they intersect at point

' O'

.
Trace the figure given below on a tracing paper. Place the traced figure over the figure given below and rotate it such that

∠ B O D

coincides with

∠ A O C

.
Observe the angles

∠ A O D, ∠ A O C, ∠ B O C and ∠ B O D

.

If two lines intersect each other, then the vertically opposite ...

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Mathematics Class 7>Chapter 4 - Lines and Angles>Exercise - 6>Q 1

Name two pairs of vertically opposite angles in the figure.
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Mathematics Class 7>Chapter 4 - Lines and Angles>Exercise - 6>Q 3

Give some examples of vertically opposite angles in your surroundings.

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Mathematics Class 7>Chapter 4 - Lines and Angles>Do this>Q 2

Consider the following lines. Which line is transversal? Number and list all the angles formed. Which are the exterior angles and which are interior angles?
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