Regular and Irregular Polygons

Q.

An equilateral triangle is a regular polygon.

1. True

2. False

Q.

A polygon in which all sides are equal is called a regular polygon.

1. True

2. False

Q.

Is an equilateral triangle a regular polygon? Why? [2 MARKS]

Q.

Sum of all the interior angles of a polygon is _____________ .

1. an integral value

2. rational value

3. can’t be determined

4. irrational value

Q. The length of the side of a regular quadrilateral whose area is 16 sq. units is .

1. 1 unit
2. 2 units
3. 4 units
4. 8 units

Q. An equilateral triangle has three sides that are equal in length.

1. True
2. False

Q. (A) A rhombus with 4 acute angles.
(B) A parallelogram with 4 angles of equal measure.
(C) A rhombus with sides that measures 4 cm, 4cm, 8 cm, and 8 cm.
(D) A parallelogram with sides that measures 2 cm, 4 cm, 6 cm and 8 cm.
Which of these shapes mentioned above is possible?

1. A rhombus with 4 acute angles.
2. A parallelogram with 4 angles of equal measure.
3. A rhombus with sides that measures 4 cm, 4cm, 8 cm, and 8 cm.
4. A parallelogram with sides that measures 2 cm, 4 cm, 6 cm and 8 cm.

Q. A regular rectangle is nothing but a .

1. square
2. pentagon
3. hexagon

Q. If the sides and angles of a polygon are equal then such a polygon is called a regular polygon

1. True
2. False

Q. (A) A regular polygon is equiangular and equilateral.
(B) A rectangle is equilateral but not equiangular.
(C) Convex polygons have no portions of their diagonals in their exteriors.
(D) Equilateral triangles are always equiangular.
Which of the above statement(s) is incorrect?

1. A regular polygon is equiangular and equilateral.
2. A rectangle is equilateral but not equiangular.
3. Convex polygons have no portions of their diagonals in their exteriors.
4. Equilateral triangles are always equiangular.