CLASS 7 CHAPTER 6 SOFTWARE APPLICATIONS ( GEOGEBRA) QUESTION ANSWSERS Q 1 What is Open Source Software? Ans 1- Open source software is generally available free of cost on internet. We can 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 area) 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 area) 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 area) Line Segment tool b) Perpendicular tool c) Intersect tool d) Circle with a center e) Point tool Q 8- Name the tools- Ans 8 - a) select Tool b) Point tool c) Line tool d) Line Segment Tool e) Angle tool