Terms Related to Polygons

Q. Sum of interior angles of a quadrilateral is _________ .

1. 90${}^{\circ }$
2. 180${}^{\circ }$
3. 270${}^{\circ }$
4. 360${}^{\circ }$

Q.

Draw a rough sketch of a quadrilateral $KLMN.$ State,

Two pairs of opposite angles

Q. The point of intersection of two sides of a polygon is called a

1. diagonal
2. vertex
3. altitude

Q.

A line segment formed by joining two nonadjacent vertices of a polygon is called its _________

Q. Name the adjacent angles of the given quadrilateral

1. $(\angle D$, $\angle C)$ , $(\angle C$, $\angle B)$, $(\angle B$, $\angle A)$, $(\angle A$, $\angle D)$
2. $(\angle D$, $\angle B)$ , $(\angle C$, $\angle A)$, $(\angle B$, $\angle A)$, $(\angle A$, $\angle D)$
3. $(\angle D$, $\angle C)$ , $(\angle A$, $\angle C)$, $(\angle B$, $\angle D)$, $(\angle A$, $\angle D)$
4. $(\angle D$, $\angle A)$ , $(\angle A$, $\angle C)$, $(\angle B$, $\angle A)$, $(\angle D$, $\angle B)$

Q.

Which of the following is a polygon with three vertices?

1. Figure 1

2. Figure 2

3. Figure 4

4. Figure 3

Q.

Which of the following is an adjacent side of AB?

1. BC

2. CD

3. FE

4. AF

Q.

The joins of vertices, that are not adjacent, are called the ________of the polygon.

1. sides

2. diagonals

3. angles

4. vertices

Q. Name the points and then the line segments in each of the following figures.


[4 MARKS]

Q. Identify the diagonals in the figure:

1. AB
2. AC
3. BC
4. BD

Q.

The possible number of diagonals of the following figure are

1. 5

2. 4

3. 2

4. 3

Q. Which of the following is pair of adjacent sides in the given figure?

1. AB, CD
2. BC, CD
3. AD, BC
4. None of these

Q. Ram had five matchsticks of equal length. He made a closed figure with those matchsticks, then the figure will have ___ sides and ___ diagonals.

1. 5, 6
2. 5, 5
3. 6, 2
4. 6, 6

Q.

Question 65

How many points are marked in the figure?

Q. A polygon has $44$ diagonals. The number of its sides are

1. $10$
2. $11$
3. $9$
4. $12$

Q. A polygon of 4 sides can be divided into:

1. 2 triangles using 2 diagonals
2. 4 triangles using 2 diagonals
3. 3 triangles using 2 diagonals
4. 2 triangles using 1 diagonal

Q. Identify the pairs of adjacent sides in the figure.

1. PQ, QR
2. PS, QS
3. PR, QR
4. RS, RQ

Q. Name the opposite angles and the adjacent angles of the marked angle in this quadrilateral.​

Q.

Question 18

Fill in the blank to make the statement true.

The number of diagonals in a hexagon is____________.

Q. Which of the following is an adjacent side of AB?

1. CD
2. EF
3. ED
4. BC

Q. Draw a rough sketch of a quadrilateral KLMN. State the following:​

Q. Identify the pairs of adjacent angles in the figure:

1. $\angle P,\angle Q$
2. $\angle P,\angle R$
3. $\angle S,\angle Q$
4. $\angle R,\angle Q$

Q.

Question 2
The number of diagonals in a septagon is
a) 21
b) 42
c) 7
d) 14

Q. Polygons with all angles and sides equal are called regular polygons.

1. False
2. True

Q. Polygons with all angles and sides equal are called regular polygons.

1. False
2. True

Q. The number of sides in the given flag is :

1. 3
2. 5
3. 4
4. 7

Q.

Ram had five matchsticks of equal length. He made a closed figure with those matchsticks, then this figure will have ____sides and ___diagonals.

1. 5, 6

2. 5, 5

3. 5, 2

4. 6, 5

Q. Which of the following is an adjacent side of AB?

1. CD
2. EF
3. ED
4. BC

Q.

Ram had five matchsticks of equal length. He made a closed figure with those matchsticks, then this figure will have ____sides and ___diagonals.

1. 5, 6

2. 5, 5

3. 5, 2

4. 6, 5

Q. The number of sides in the given flag is :

1. 5
2. 6
3. 4
4. 3