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Lines and Angles Class 7 PPT

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 Page 2


?Line is  a straight path 
extending in both directions.
?Line segment is a part of line 
included between two end 
points
?Ray is a part of line with one 
end point .
Page 3


?Line is  a straight path 
extending in both directions.
?Line segment is a part of line 
included between two end 
points
?Ray is a part of line with one 
end point .
Types of angles
Linear pair of angles. Adjacent angles Vertically opposite angles
Angle is made by two rays 
intersecting at a vertex.
Page 4


?Line is  a straight path 
extending in both directions.
?Line segment is a part of line 
included between two end 
points
?Ray is a part of line with one 
end point .
Types of angles
Linear pair of angles. Adjacent angles Vertically opposite angles
Angle is made by two rays 
intersecting at a vertex.
? Angles made by the transversal
Angle made 
by the 
transversal
Corresponding 
angles
Alternate 
angles
Page 5


?Line is  a straight path 
extending in both directions.
?Line segment is a part of line 
included between two end 
points
?Ray is a part of line with one 
end point .
Types of angles
Linear pair of angles. Adjacent angles Vertically opposite angles
Angle is made by two rays 
intersecting at a vertex.
? Angles made by the transversal
Angle made 
by the 
transversal
Corresponding 
angles
Alternate 
angles
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FAQs on Lines and Angles Class 7 PPT

1. What are lines and angles?
Lines and angles are basic geometrical concepts. A line is a straight path that extends infinitely in both directions. An angle is formed when two lines or line segments meet at a common point.
2. What are the different types of angles?
There are several types of angles, including acute angles (less than 90 degrees), right angles (exactly 90 degrees), obtuse angles (more than 90 degrees but less than 180 degrees), and straight angles (exactly 180 degrees).
3. How do you measure angles?
Angles are measured using a protractor. Place the center of the protractor on the vertex of the angle, align one side of the angle with the baseline of the protractor, and read the measurement on the protractor scale.
4. What is the sum of the angles in a triangle?
The sum of the angles in a triangle is always 180 degrees. This property is known as the Triangle Sum Theorem.
5. How do you classify triangles based on their angles?
Triangles can be classified based on their angles as acute triangles (all angles less than 90 degrees), obtuse triangles (one angle greater than 90 degrees), or right triangles (one angle exactly 90 degrees).
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