opposite angles

Topic:
Angles
when two straight lines intersect with each other than vertically opposite angles will be equal .
AB and CD are two line segment and point E is called point of intersection where two lines intersect each other at a point. .angle CED and  angle AEB are also called linear pair because sum of angle CEA and angle AED is 180 degree .we can see that vertically opposite angles are equal.

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how many points of intersection are their in figure

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what is sum of linear pair?

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How many angles are there in this given figure?

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Which angles will be equal ?

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What is the sum of angels in linear pair

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