CLASS 8 CHAPTER 3 Q/A

CLASS 8 CHAPTER 3- SOFTWARE APPLICATIONS

Q 1 What is Open Source Software?
Ans 1- Open source software is generally available free of cost on internet. We get edit source code of open source software.

Q2. What is Geogebra ?
Ans 2- Geogebra is an open source and dynamic software.
It is used to make geometrical shapes in computer. It is available free of cost on internet.

Q3- Draw diagram of Geogebra Window.
Ans 3.-

Q4- Write the tools used to make a triangle and measure sum of its interior angle in Geogebra?
Ans 4-    Tools of Geogebra used are-
a) Point tool
b) Line segment tool
c) Polygon tool
d) Angle tool
e) Input box

Q5 How to save Geogebra file?
Ans 5 – To save file in Geogebra , click on File and go to save option. Geogebra file will be saved with .gbb extension.

Q 6-  Write name of tools of geogebra used to construct equilateral triangle using geometrical properties?
Ans 6-  tools used are-
a) Line segment tool
b) Intersect tool
c) Circle with a center
d) Point tool.

Q7 -. What are tools of Geogebra used to construct a square using geometrical properties?
Ans 7-   Tools used are-
a) Line Segment tool
b) Perpendicular tool
c) Intersect tool
d) Circle with a center
e) Point tool

Q8 - What are tools of Geogebra used to construct a Parallelogram  using geometrical properties?
Ans 8 -  Tools used are-
a) Point tool
b) Line tool
c) Parallel line tool
d) Line segment tool
e) Intersect tool

Q 9 – What is Tessellation?
Ans 9- A tessellation of a flat surface is the tilling of a plane using one or more geometric shapes called tiles , with no overlaps or no gaps.

 Q 10 Name the tools-
                       

Ans 10-  a) select Tool
                b) Point tool
c) Line tool
d) Line Segment Tool
e) Angle tool

Q 11- What is google Earth?
Ans 11- Google Earth is a computer program that gives a 3D representation of Earth based primarily on satellite imagery. It is used to find  and view any location in computer.

Q 12- Who discovered Google Earth?
Ans 12- Google Earth is discovered by Keyhole Inc. Google purchased Google earth in 2004.

Q 13. What are various options available in Google Earth?
Ans 13 – Various Option are –
a) Look around
b) Move around
c) Slider
d) Search Box
e) Get Direction
f) History
g) Layers
h) Rulers