Poly-means "many" and -gon means "angle".

Learn term:dodecagon = polygon with 12 sides.

As one angle is 12^@, only thing you can say is that sum of remaining angles is 360^@-12^@=348^@.

Find the number of quadrilaterals that can be made using the vertices of a polygon of 12 sides as their vertices and having (1) exactly 1 sides common with the polygon. Sides Names 1: henagon: monogon: 2: digon: bigon 3: trigon: triangle: 4: tetragon: quadrilateral: 5: pentagon: 6: hexagon: 7: heptagon: septagon: 8: octagon: 9: enneagon: nonagon: 10 decagon; 11: hendecagon: undecagon 12: dodecagon: 13: tridecagon: triskaidecagon 14: tetradecagon: tetrakaidecagon 15: pentadecagon: pentakaidecagon 16: hexadecagon: hexakaidecagon 17: … Types of Polygons Regular or Irregular. A geometrical figure having a number of sides are given some names. Learn term:dodecagon = polygon with 12 sides. Polygon (straight sides) Not a Polygon (has a curve) Not a Polygon (open, not closed) Polygon comes from Greek. Each polygon is named according to it's the number of sides. Choose from 418 different sets of term:dodecagon = polygon with 12 sides.

with free interactive flashcards. In a regular polygon (equal sides and angles), you use (n-2)180 to find out what the interior angle sum is (n=number of sides in polygon) and you divide by that number by whatever n is to find out the measure of an individual The number of diagonals in a polygon = 1/2 N(N-3) The number of triangles (when you draw all the diagonals from one vertex) in a polygon = (N - 2).

13 ... A polygon can have anywhere between three and an unlimited number of sides. Say there’s a small tennis tournament with six people in which everyone has to play everyone else.

Polygon Formulas (N = # of sides and S = length from center to a corner) Area of a regular polygon = (1/2) N sin(360°/N) S 2.

n = 360°/e.

flashcards on Quizlet.

flashcards on Quizlet.

Thus, n equals 15 or –12. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The exterior angles (12 in all) whether equal (for a regular polygon) or unequal (for an irregular polygon) add up to 360 deg.

The area of the dodecagon in square units is 2 So, a pentagon with five sides has five exterior angles. Start studying Polygon names 1-12. The exterior angles of a polygon always add up to 360°. A regular dodecagon is one with equal sides and angles, and it's possible to derive a formula for calculating its area.

All of the lines of a polygon connect which means there is not an opening. A 4-sided polygon is a quadrilateral.

But because a polygon can’t have a negative number of sides, n must be 15. Choose from 418 different sets of term:dodecagon = polygon with 12 sides.

Answer: 30 sides So you have a 15-sided polygon (a pentadecagon, in case you’re curious). However many sides a polygon has is the same number of exterior angles it has. A polygon is any closed two-dimensional figure with 3 or more straight (not curved) sides, and a 12-sided polygon is known as a dodecagon.

Here are some examples of polygons.

Thus A polygon has sides 3 or more.

Some specific names are as follows A 3-sided polygon is a triangle. with free interactive flashcards. An irregular dodecagon has sides of different lengths and different angles.

A regular polygon with 12 sides (dodecagon) is inscribed in a square of area 24 square units as shown in the figure where four of the vertices are mid points of the sides of the square. May be 30 sides, but you need additional information. You do not know about other angles and number of sides could be any number. You cannot find with the given information. The reason is that the only that is sure is that sum of all exterior angles of any polygon is always 360^@. Here’s a nifty real-world application of the diagonal formula. For a regular polygon (all angles/sides the same), the formula is: e = 360°/n. Sum of the interior angles of a polygon = (N - 2) x 180°. Similar Questions.

A 5-sided polygon is a pentagon. A twelve sided polygon is a polygon with 12 sides.

Polygon Parts 12. The interior angles (12 in all) whether equal (for a regular polygon, each will be 150 deg) or unequal (for an irregular polygon) add up to … 360°/12° = 30. Just divide 360° by the measure of your exterior angle to find out how many sides the polygon has. A hexagon will have six exterior angles and so on. 150 30 ° Triskaidecagon.

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