**1. Match the following**

** (A)
(B)**

1. Regular
polygon
b

2. Midpoint or
center
d

3. Angle with given
size
e

4. Circle with center
through point. a

5. Angle
bisector
c

**2. Fill in the blanks**

1. Tool used for
measurement of interior angle is _____.

Ans->Angle.

2. Click ______ show
and edit all the created objects.

Ans-> Edit –
Show/Hide Objects.

3. Construction of
objects and graphs of functions is shown by ___ View.

Ans->
Graphic.

4. Tool used for
hiding the axes is _____ tool.

Ans-> Axes.

5. Angle bisector of
an angle can be constructed using ____ tool by clicking
____times in succession.

Ans-> Angle
bisector, three

**3. Give uses of following
tool.**

**Tools
Uses**

1. **Tangents** -
To draw tangents to a circle from a given point or parallel to
given line.

2. **Segment** -
To draw a segment between two point A and B.

3. **Perpendicular** **bisector** -
To create a perpendicular bisector of a given segment between two
point

4. **Perpendicular
line** - To draw a straight line through a point and perpendicular to a
line.

5.**
Parallel line - **To draw a straight line through a point and parallel
to a given line.

**4. Answer the following.**

**1. Give names of different parts of Geogebra
screen.**

Ans-> The main part
of the Gegebra window are (1) Title bar (2) Menu bar (3) Tool Bar (4) Algebra
View (5) Graphics View (Drawing Pad) (6) Input Bar.

**2. What would you use to type the equation for
drawing graph.**

Ans-> In Geogrbra,
a graph is drawn by typing its equation in the input field of the Input bar and
pressing the Enter key. The rules for the algebraic input are as follows.

(1) Only x and y in
lower case can be used as variables.

(2) A linear equation
in two variables can be entered in standard form. Multiplication is
entered by using an asterisk (*) and division is entered using a forward slash
(/).

(3) An exponent or
index is entered using a caret (^).

**3. Give two methods to find mean, mode and
median of given data.**

To find out mean
median and mode of a list of sample data, the list may be created in two ways
in Geogebra, namely, using input bar or the spreadsheet view.

Method 1 : In the input field of the input bar, type the sample
data as a comma delimited list with in braces (Curly brackets). It may be named
using lower or upper case letters. If no names are given, the program names
them as list1, list2 etc. The Algebra View displays the list and its name under
free objects.

Method 2: Enable the spreadsheet View from the View menu. Enter
the data in the first column or row. Select all data by dragging the mouse and
select Create List from the right- click context menu. The algebra view
displays the list and its name.(L1, L2, etc) under dependent objects.

Suppose a list has been created with a name L1. To find the
mean, median and mode of the list, type each command with the list name enclosed
within square brackets in the input bar, Mean [L1],Median [L1], Mode [L1]
and press enter key. The algebra view displays the values under dependent
objects.