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Question
State the name of a regular polygon of 3 sides.
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Solution
A polygon that has equal sides and equal angles is called a regular polygon.
Equilateral triangle:
RELATED QUESTIONS
Examine the table. (Each figure is divided into triangles and the sum of the angles deduced from that.)
| Figure |  |
 |
 |
 |
| Side | 3 | 4 | 5 | 6 |
| Angle sum | 180° |
2 × 180° = (4 − 2) × 180° |
3 × 180° = (5 − 2) × 180° |
4 × 180° = (6 − 2) × 180° |
What can you say about the angle sum of a convex polygon with number of sides?
a) 7
b) 8
c) 10
d) n
How many sides does a regular polygon have if the measure of an exterior angle is 24°?
Classify the following curve as open or closed:
Following are some figures: Classify each of these fugures on the basis of the following:
(i) Simple curve
(ii) Simple closed curve
(iii) Polygon
(iv) Convex polygon
(v) Concave polygon
(vi) Not a curve
Find the number of side of a regular polygon, when of its angle has a measure of 150° .
How many diagonals does a hexagon have?
Which of the following is an equiangular and equilateral polygon?
The number of diagonals in a hexagon is ______.
The measure of ______ angle of concave quadrilateral is more than 180°.
Find the measure of each angle of a regular octagon.
