Two angles are complementary to each other if they add upto 90°.

**Special
pairs of angles**

Two angles are complementary
to each other if they add upto 90° [See Fig.
4.28(i)] Two angles are supplementary to each
other if they add upto 180° [See Fig. 4.28(ii)]

In the above figures, 20° and 70° are complementary
angles and 147° and 33° are supplementary angles. But 35° and 75° are neither complementary
nor supplementary.

**ICT Corner**

**GEOMETRY**

Expected
Result is shown in this picture

**Step
– 1**

Open
the Browser and copy and paste the Link given below (or) by typing the URL given
(or) Scan the QR Code.

**Step
− 2**

GeoGebra
Work Book called “Measuring Angles Using Protractor” will appear. An angle and a
Protractor will appear.

**Step-3**

Drag
the protractor and place it on the angle and measure it. Now Click on the “**Answer**”
Box to check whether your measurement is correct. Click on “**Random**” button
to create new angle and continue till you understand how to measure the angle.

**Browse in the link**

Measuring
Angles: https://www.geogebra.org/m/fMnsdbzv

Tags : Geometry | Term 1 Chapter 4 | 6th Maths , 6th Maths : Term 1 Unit 4 : Geometry

Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail

6th Maths : Term 1 Unit 4 : Geometry : Special pairs of angles | Geometry | Term 1 Chapter 4 | 6th Maths

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