By signing up, you'll get thousands of step-by-step solutions to your homework questions. All triangles are polygons. They are a closed shape with 3 or more sides. But in any case, the triangle is a polygon. User: If a triangle is an obtuse triangle then it can not be an isosceles triangle true or false? Perfect for acing essays, tests, and quizzes, as well as for writing lesson plans. A polygon is any 2-dimensional shape formed with straight lines. An equilateral triangle is one in which all the sides are the same and all the angles are the same. Answer of this question is lie in the word itself. User: The sum of the exterior angles of a polygon is always 180 degrees true or false? A triangle is a special polygon because it has the LEAST number of sides possible which is 3 sides. A triangle (no matter if it is isosceles, equilateral or other) is an example of a polygon. By signing up, you'll get thousands of step-by-step solutions to your homework questions. Perhaps you mean if you join two triangles together is the resultant shape a polygon? A polyhgon is any figure bounded by a finite set of line segments closing in a loop (i.e. Answer to: Is an isosceles triangle a polygon? First, a triangle is a polygon. A triangle can be a convex polygon. Move your cursor over the triangles to learn more. Answer to: Is a triangle a polygon? A summary of Introduction to Triangles in 's Geometry: Polygons. Triangles of a Polygon Definition: The triangles of a polygon are the triangles created by drawing line segments from one vertex of a polygon to all the others. Thus a triangle is a polygon with three sides; and two triangles is thus two three-sided polygons. Triangles are classified by sides and by angles. Yes, ofcourse Triangle is a Polygon. Let's look into things. Definition of a Polygon. each vertex (an end point of a segment) is common to two consecutive segments). As you learned in the last lesson, a triangle is the simplest polygon, having three sides and three angles. These... See full answer below. Try this Adjust the number of sides of the polygon below, or drag a vertex to note the number of triangles inside the polygon. Each of these will also be either equilateral, isosceles or scalene . A triangle is a polygon. It is impossible to form a polygon with 1 or 2 sides. Triangles, quadrilaterals, pentagons, and hexagons are all examples of polygons. To be a regular polygon, the polygon must have equal sides. If the triangle doesn't have sides of equal length, then it isn't a regular polygon. The sum of the three angles of a triangle is equal to 180 degrees. A triangle may or may not be a regular polygon. There are regular and irregular polygons. Well, as you will see from my illustrations below, the answer is yes. Then it is a regular polygon. It is impossible to form a polygon with 1 or 2 sides. One with an obtuse angle is called obtuse, and one with a right angle is known as right angled. The angles of these sides will add up to 180 degrees. Triangles are polygons as well. A triangle with only acute internal angles is called an acute triangle. Learn exactly what happened in this chapter, scene, or section of Geometry: Polygons and what it means. User: If a triangle is a right triangle, then the other two angles must be acute true or false?