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| Using the Input Box in Geogebra 3) What would you use to type the equation for drawing a graph in Geogebra?OR What is the use of the Input Box in Geogebra? |
| Using the input box at the bottom of the Geogebra Screen we can enter different objects on the Graphics area of the Geogebra Window. Points, lines, circles, segments, midpoints of segments, Polygons etc., can be easily drawn in the Geogebra Window. The usual operators used in Computers are still applicable. ‘+’ for Addition, ‘-‘ for Subtraction ‘*’ for multiplication and ‘/' for division ‘^’ for exponentiation. Multiplication can also be done by the following methods. E.g., 2*x is same as 2x and is same as 2 x. The Algebraic representation of the Command will be displayed in the Algebra Section. Examples of Commands (Give any two examples for a two mark Question) |
Command | Use of the command | Output |
A=(3,4) | Plots a point A (3,4) on the Graph |  |
Segment[A, B] | Draws a segment between points A and B. The Points A and B must be previously defined. |  |
Line[A, B] | Draws a line passing through the points A and B. The equation of the line will be displayed in the Algebra section. |  |
Circle[(2,3), 2] | Draws a circle with center at point (2,3) and Radius 2 Displays the equation of the circle as c: (x - 2)² + (y - 3)² = 4 |  |
Circle[A, AB] | Draws a Circle with center at the point A and with Radius equal to length of Segment AB. The equation is displayed in the Algebra Section |  |
Circle[C, AB] | Draws a Circle with center at the point C and with Radius equal to Segment AB. The equation is displayed in the Algebra Section. |  |
Circle[A, B] | Draws a Circle with Center at A and with a point B on the Circle. (AB is the radius) The equation is displayed in the Algebra Section. |  |
Circle[A, B, C] | Draws a Circle passing through the points A, B and C. The equation of the circle will be displayed in the Algebra Section. |  |
AngleBisector[B,A,C] | Draws a Line Bisecting the angle formed by the three points B, A and C. The equation of the line is displayed in the Algebra Section. |  |
Area[A, B, C] | Finds the area of the Triangle having vertices A, B and C. The answer is displayed in the Algebra Section under Number. |  |
Area[A, B, D, C] | Finds the area of the Rectangle (Polygon) having vertices A, B, D and C. The answer is displayed in the Algebra Section under Number. | |
Area[c] | Displays the area of the circle (c) in the number Section |  |
Circumference [c] | Displays the circumference of the Circle (c) under Number Section. | |
Incircle[A, B, C] | Draws the Incircle of the triangle having vertices A, B and C. |  |
Midpoint [A, C] | Displays the midpoint between the points A and C. |  |
George Ferrao
such a BIGGGGGGGGG answer!!!!!!!!!!!!!!!
ReplyDeleteNot at all Aaisha, its just 5 sentences long. Give only two examples as I have mentioned above. The other examples have been shown so that students get a good idea of the capabilities of Geogebra. Do practice these examples.
DeleteThanks for your comments and Best of Luck in your forthcoming exams.
Thank you. Do you know how to change the color of an object (a polygon) in an if then statement that I created in the input box?
ReplyDeleteThank you
Hi Madi,
DeleteThat was a tricky one. But the answer is yes it can be done.
Try If[a>1,SETCOLOR[poly1,"RED"],SETCOLOR[poly1,"GREEN"]]
I used the if- then- else format, and a is the length of one side of the polygon AB. I don't know what condition you want to put, but it should work for any condition.
If you give me more details about what exactly you are trying to do, I may be able to put up a procedure for it.
I hope this was helpful.
George