![]() Thus all concave heptagons are irregular. At least one diagonal lies outside the closed figure. Concave Heptagon: Have at least one vertex pointing inwards with an interior angle greater than 180°.A convex heptagon can be both regular and irregular. No interior angle of a convex heptagon measure more than 180°, and all the diagonals lie inside the closed figure. Convex Heptagon: Have all vertices pointing outwards.An irregular heptagon can be both convex and concave. Irregular Heptagon: Does not have all sides equal or all interior angles equal, but the sum of all seven interior angles is equal to 900°.It has seven lines of symmetry and rotational equilibrium of order seven. The sides of a regular heptagon meet each other at an angle of 5π/7 radians or. Regular Heptagon: Has seven sides of equal length and seven interior angles each measuring 128.571° and exterior angles of 51.43° each.The formula is given below:Įxterior angle = 360°/n, here n = number of sidesĭepending on the sides, angles, and vertices, heptagon shapes are classified into the following types: The angle formed by any side of the heptagon and the extension of its adjacent side. Sum of the interior angles = (7-2) x 180°/7 ![]() One interior angle = (n-2) x 180°/n, here n = number of sides The measure of one interior angle can be obtained by dividing the sum of the interior angles by the number of sides in a heptagon. Sum of the interior angles = (7 -2) x 180° Sum of the interior angles = (n-2) x 180°, here n = number of sides ![]() The total measure of all the interior angles combined in the heptagon. The angle formed inside the heptagon at its corners when the line segments join in an end to end fashion. ![]()
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