![]() (Each figure is divided into triangles and the sum of the angles deduced from that. What is the sum of the measures of the angles of a convex quadrilateral? Will this property hold if the quadrilateral is not convex? (Make a non-convex quadrilateral and try!).How many diagonals does each of the following have? (a) A convex quadrilateral (b) A regular hexagon (c) A triangle.Examples of quadrilaterals include squares, rectangles, and kites. (a) Simple curve (b) Simple closed curve (c) Polygon (d) Convex polygon (e) Concave polygon A quadrilateral is a shape that’s four-sided and two-dimensional. Classify each of them on the basis of the following. (c) A regular polygon of 6 sides is called a hexagon. ![]() (b) A regular polygon of 4 sides is a square. (a) A regular polygon of 3 sides is an equilateral triangle. NCERT Solutions Class 8 Maths Chapter 3 Exercise 3.1 Question 5Ī polygon having all sides of equal length and the interior angles of equal measure is known as a regular polygon. Video Solution: What is a regular polygon? State the name of a regular polygon of (i) 3 sides (ii) 4 sides (iii) 6 sides ☛ Check: NCERT Solutions for Class 8 Maths Chapter 3 (c) 6 sides = a regular polygons having six sides is called a Hexagon. (b) 4 sides = polygons having four sides is called a quadrilateral. A regular 4 sided polygon is a square. (This also means that a quadrilateral has exactly four vertices, and exactly four angles. A regular 3 sided polygon is an equilateral triangle. A quadrilateral is a polygon that has exactly four sides. (a) 3 sides = polygons having three sides is called a triangle. In a rectangle, one set of parallel sides is longer than the other, making it look like an. As a type of parallelogram, it has opposite parallel sides. A solid 3D shape with 5 faces could be a triangular prism or a square. If all of the angles are equal and all sides are equal, then it is a regular pentagon, if not its called an irregular pentagon. To be a pentagon it must have: five straight sides and be closed. A rectangle is a shape with parallel opposite sides, combined with all 90 degree angles. A five sided 2D shape is called a pentagon. a regular polygon is both ‘equiangular’ and ‘equilateral’. Perimeter: Side 1 + Side 2 + Side 3 + Side 4 Alternatively, Perimeter: Side4 Rectangle. 2,518 12 12 silver badges 27 27 bronze badges. What are the 4 sided ones called then geometry terminology Share. Regular polygon - A polygon having all sides of equal length and the interior angles of equal measure is known as a regular polygon i.e. Like how triangles are 3 sided shapes, octagons are 8 sided shapes. State the name of a regular polygon of (i) 3 sides (ii) 4 sides (iii) 6 sides
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