Table of Contents
How many sides does a Pentacontakaidigon have?
forty-two-sided
In geometry, a tetracontadigon (or tetracontakaidigon) or 42-gon is a forty-two-sided polygon. (In Greek, the prefix tetraconta- means 40 and di- means 2.)
Is the sum of interior angles always 360?
The sum of the exterior angles of any polygon (remember only convex polygons are being discussed here) is 360 degrees. This is a result of the interior angles summing to 180(n-2) degrees and each exterior angle being, by definition, supplementary to its interior angle.
What is the sum of interior angles of a Nonagon?
1260°
Nonagon/Sum of interior angles
What is a 39 sided shape called?
What is the name of a polygon with…?
| # | Name of the Polygon + Geometric Drawing |
|---|---|
| 38 sides | octatriacontagon |
| 39 sides | enneatriacontagon |
| 40 sides | tetracontagon |
| 50 sides | pentacontagon |
What is the sum of interior angles of hexagon?
720°
Hexagon/Sum of interior angles
What is the sum of interior angles of a dodecagon?
1800°
Dodecagon/Sum of interior angles
How to calculate the sum of interior angles?
The formula for the sum of that polygon’s interior angles is refreshingly simple. Let n n equal the number of sides of whatever regular polygon you are studying. Here is the formula: Sum of interior angles = (n − 2) × 180° S u m o f i n t e r i o r a n g l e s = (n – 2) × 180 °
Is the sum of exterior angles always 360°?
Still, this is an easy idea to remember: no matter how fussy and multi-sided the regular polygon gets, the sum of its exterior angles is always 360°.
What are the interior and exterior angles of a polygon?
Their interior angles add to 180° 180 °. Likewise, a square (a regular quadrilateral) adds to 360° 360 ° because a square can be divided into two triangles. The word “polygon” means “many angles,” though most people seem to notice the sides more than they notice the angles, so they created words like “quadrilateral,” which means “four sides.”
What are the interior angles of a triangle?
Triangles are easy. Their interior angles add to 180° 180 °. Likewise, a square (a regular quadrilateral) adds to 360° 360 ° because a square can be divided into two triangles.