PPT: Angles as Turns | Mathematics (Maths Mela) Class 5 - New NCERT PDF Download

 Page 1


Angles as 
Turns
Page 2


Angles as 
Turns
Introduction
We see angles all around us 4 in doors, fans, scissors, and even in the hands of a clock!
An angle is simply the amount of turn from one position to another.
What is a Turn?
Imagine standing straight and then turning.
A turn means rotation from a starting point.
Examples:
Door opening
Tap turning
Wheel rotating
< Angles are nothing but measures of turns.
Page 3


Angles as 
Turns
Introduction
We see angles all around us 4 in doors, fans, scissors, and even in the hands of a clock!
An angle is simply the amount of turn from one position to another.
What is a Turn?
Imagine standing straight and then turning.
A turn means rotation from a starting point.
Examples:
Door opening
Tap turning
Wheel rotating
< Angles are nothing but measures of turns.
Understanding Full and Half Turns
Full Turn: Turning completely around and coming back to 
the starting position.
Half Turn: Turning halfway and facing the 
opposite direction.
Quarter Turn: Turning one-fourth of a full turn, facing sideways.
Page 4


Angles as 
Turns
Introduction
We see angles all around us 4 in doors, fans, scissors, and even in the hands of a clock!
An angle is simply the amount of turn from one position to another.
What is a Turn?
Imagine standing straight and then turning.
A turn means rotation from a starting point.
Examples:
Door opening
Tap turning
Wheel rotating
< Angles are nothing but measures of turns.
Understanding Full and Half Turns
Full Turn: Turning completely around and coming back to 
the starting position.
Half Turn: Turning halfway and facing the 
opposite direction.
Quarter Turn: Turning one-fourth of a full turn, facing sideways.
Real Life Example
Think about a minute hand on a clock - it makes a full turn when it returns to its starting position.
Page 5


Angles as 
Turns
Introduction
We see angles all around us 4 in doors, fans, scissors, and even in the hands of a clock!
An angle is simply the amount of turn from one position to another.
What is a Turn?
Imagine standing straight and then turning.
A turn means rotation from a starting point.
Examples:
Door opening
Tap turning
Wheel rotating
< Angles are nothing but measures of turns.
Understanding Full and Half Turns
Full Turn: Turning completely around and coming back to 
the starting position.
Half Turn: Turning halfway and facing the 
opposite direction.
Quarter Turn: Turning one-fourth of a full turn, facing sideways.
Real Life Example
Think about a minute hand on a clock - it makes a full turn when it returns to its starting position.
Rule-
2 Half Turns = 1 Full Turn
4 Quarter Turns = 1 Full Turn
2 Quarter Turns = 1 Half Turn