What is a regular polygon? State the name of a regular polygon of: (a) 3 sides (b) 4 sides (c) 6 sides

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The lanthanides that exhibit +2 and +4 states are shown in the given table. The atomic numbers of the elements are given in the parenthesis. +2 +4 Nd (60) Ce (58) Sm (62) Pr (59) Eu (63) Nd...

(i) 9 sides Solution: Since, 9 sides of a polygon has nine angles And we know that sum of exterior angles of a polygon = 360⁰ So, 9 exterior angles = 360° Or, 1 exterior...

Solution:We know that number of angles of a polygon = number of sides And we know that sum of exterior angles of a polygon = 360⁰ So, measure of each angle =...

Solution: Here, each interior angle = 165° Hence, each exterior angle = 180° - 165° = 15° As, measure of each exterior angle = 15° So, number of sides = 360°/15° = 24 Hence, number...

Solution:  Since, number of sides of a polygon = 360°/each exterior angle Hence, number of sides of given polygon = 360°/22° = 16.36 Since, answer is not a whole number, thus, a regular...

Solution: Here, each interior angle = 22° Hence, each exterior angle = 180° - 22° = 158° Hence, number of sides = 360°/158° = 2.27 Since, answer is not a whole number, thus, a...

Solution: (a) Triangle is the polygon with minimum number of sides and an equilateral triangle is a regular polygon because all sides are equal in this. We know that each...

(i) No, a polyhedron cannot have 3 triangles for its faces. (ii) Yes, a polyhedron can have four triangles which is known as pyramid on triangular base. (iii) Yes, a polyhedron has...

Since the perimeters and two sides are proportional Therefore, the third side is proportional to the corresponding third side. i.e., The two triangles will be similar by SSS criterion.