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13 triangles will be formed

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Q: How many triangles can be formed in a 15 sided polygon when one of its vertices is joined to the other vertices?
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What is a line segment in a polygon connecting any two nonconsecutive vertices?

A line segment in a polygon connecting any two nonconsecutive vertices is called a diagonal.


What is the defenition of a polygon?

A simple closed figure formed by line segments joined together. The point where the sides meet is called the vertex (vertices, plural). A regular polygon is formed when all the sides are equal. Polygons are named by the number of sides and angles they contain.


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Three or more line segments joined together by vertices.


Is a regular pentagon made up of 5 isosceles triangles?

It can be, if all the vertices of the pentagon are joined to its centre. But if they are joined to any other point, it will not be.


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Imagine a house's roof -- two triangles joined by lines to their matching vertices. This gives you 6 vertices and only 5 sides.


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The polygon is a Quadrilateral.


What is a figure wich is made up of line segments called sides and is joined t endpoints called vertices?

Any polygon is.


How many diagonals are in a quadrilateral?

A diagonal line of a polygon is a line that joins any two vertices not already joined by a side.A polygon with n sides has n(n-3)/2 diagonals→ a quadrilateral with 4 sides has 4(4-3)/2 = 4 × 1 ÷ 2 = 2 diagonalQuadrilaterals include:Squares, rectangles, rhombuses, parallelograms, kites, trapezia (trapezoids).The diagonals of a quadrilateral divide the quadrilateral into 4 triangles. depending upon the quadrilateral some, or all of the triangles may be congruent.The properties of the diagonals of each quadrilateral are:square: equal and bisect each other at 90°; the triangles formed are all congruentrectangle: equal and bisect each other but not at 90°; the triangles formed are all congruentrhombus: not equal but bisect each other at 90°; the triangles formed are all congruentparallelogram: not equal but do bisect each other, but not at 90°; the triangles formed are congruent in (opposite) pairskite: perpendicular and the longer diagonal bisects the shorter diagonal; the triangles formed are congruent in (adjacent) pairstrapezium (trapezoid): only of equal length and bisect each other if it is an isosceles trapezium (trapezoid) and the triangles formed are congruent in (opposite) pairs; otherwise they are of differing lengths and just intersect each others and the triangles formed are non-congruent.


What figure is made up of line segments called sides and is joined at endpoints vertices?

Any closed polygon could be made using the descriptions above.


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Triangle: A figure formed by exactly three (non-colinear) points joined by line segments is a triangle. A figure formed by three or more points is generally called a polygon. Of course, if all of the points are co-linear then there is not much of a figure. A polygon has 3 or more sides.


Name the type of special quadrilateral that will appear when you join two congruent equilateral triangles?

There are two types of quadrilaterals that are formed when two congruent equilateral triangles are joined. These shapes are rhombus and parallelogram.


Which of these is a polygon?

A polygon has 3 or more joined side