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1. Check if the base line is touching the outer scale zero or inner  scale zero.

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1. pace the focal point of the protractor on the vertex.
2.put the base line of the protractor on the given line before starting to measure the degrees.

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1.acute angle less than 90 2.obtuse angle more than 90 3.right angle just 90

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1.I must see if the base line is aligned to the zero mark of the inner or outer scale
2.place the protractor on the vertex to make sure it is touching the base line

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Make sure to use very sharp pencil so that the lines are fine and sharp which makes reading easy

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Acute angle is less than 90 degrees,obtuse angle is more than 90 degrees ,right angles are 90 and a straight angle is 180 degrees

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use the protractor on the vertex to measure the angle line.

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Acute angle is lesser than 90 degree,obtuse angle is greater than 90 degree and  right angle is 90 degree

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1.obtuse angles are more then 90 degrees
2.look at the zero at the protractor and see if it is inner or outer
3. acute angles are less then 90 degrees

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Right angles are 90 degrees.Acute angles are lower than 90 degrees.btuse angles are more than 90 degrees,3 quarter of a turn is 270 degrees and one whole turn  is 360 degrees.

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example: 45 degrees

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1.I learnt how to measure angles using a protractor

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1.90 degrees is an right angle 2.lesser than 90 degrees is an acute angle 3.more than 90 degrees is an obtuse angle.

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1.You must know whether you using inner or outer scale
2.You must use a sharp pencil

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1.The base line has to be placed on the given line.
2.Remember to put the
focal point of the protractor on the vertex otherwise,you wont get the correct degrees.

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angle basics

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1.Right angle is 90 degrees.
2.Obtuse angle is more than 90 degrees.
3.Acute angle is less than 90 degrees.
4.A half-turn is 180 degrees.

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Acute angle is less than 90 degrees

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A full turn 360 degress

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a vertex is a point where two lines meet

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Finding Right, Acute, and Obtuse Angles: Grade 4 Module 4 Lesson 2

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right angles

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1.I must see if the base line is touching the inner or outer scale zero 2.Place a protractor on the vertex to make sure it touches the protractor

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half of 90 degrees is 45 degrees

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1.Look out for the Inner scale and the Outer scale
2.Look out for the Base Line if it is pointing at the inner scale and outer scale

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acute angles is less then 90 degrees , obtuse angles are more then 90 degrees

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pang zheyu

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acute angle is less than 90 degrees,obtuse angle is more than 90 degree

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pang zheyu(Angle Types)

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Which are the Different Types of angles?

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To understand angles, their types, and the ways in which they are measured, please visit https://DontMemorise.com . Don't Memorise brings learning to life through its captivating FREE educational videos. New videos every week.

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if it's more than 90 degrees

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obtuse angle(CBA)

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pang zheyu(55 degress)