Page 61 - Maths Class 06

4. Name the points (a) which lie in the inte rior ofÐ AOC (b) which lie in the exte rior of Ð AOC, show
in the given figure.

Y
A
X N

T
Z
P
O
M C
R
B

5. Name all the eight triangles shown in the given figure.
D
C

E

A B
A
6. State which of the points given in the adjoining figure lie:
S
(a) on the D ABC.
Q Z
(b) in the interior of the D ABC. N
P
(c) in the exterior of the D ABC. R

7. Draw a D XYZ. Mark a point P in its interior, a point Q on D XYZ B M C
T
and a point R in its exterior.
8. Draw a triangle ABC. Mark its all the three medians.

A Quadrilateral

A closed figure formed by four line segments such that no two line segments cross each other is called a
quadrilateral.
D R

NOTE
S
C
A quadrilateral is named listing its
A vertices, starting from any vertex.
P Q
B
(i) (ii)
Fig. 4.21
In quadrilateral ABCD, the points A B C, , and D are its vertices.
Similarly, the points P Q R, , and S are vertices of quadrilateral PQRS.

The four line segments which form a quadrilateral are called the sides of the quadrilateral.

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