It is a simple closed figure made of three line segments. 7 | Triangle and its properties MATHS | LECTURE NOTES CREATE...

Triangle a plane figure formed by three non- parallel line segments is called a triangle.

TRIANGLE A plane figure formed by three non-parallel line segments is called a triangle.

Minimum number of line segments required to form a closed figure :

Fill in the blank A polygon is a simple closed figure formed by more than ……….. Line segments.

fill in the blank to make the statement true is a closed curve entirely made up of line segments. The another name for this shape is __________.

Polygons a polygon is a closed curve (figure)formed by the line segments such that: (i)no two line segments intersect except at their end -points.(ii)no two line segments with a common end points are coincident.

Read the following statements: An equilateral triangle is a polygon made up of three line segments out of which two line segments are equal to the third - one and all its angles are 60^(@) each. Define the terms used in this definition which you feel necessary. Are there any undefined terms in this ? Can you justify that all sides and all angles are equal in a equilateral triangle.

In each of the following, state if the statement is true (T) or false (F): A triangle has three sides. A triangle may have four vertices. Any three line-segments make up a triangle. The interior of a triangle includes its vertices. The triangular regain includes the vertices of the corresponding triangle. The vertices of a triangle are three collinear points. An equilateral triangle is isosceles also. Every right triangle is scalene. Each acute triangle is equilateral. No isosceles triangle is obtuse.

In each of the following, state if the statement is true (T) or false (F). A triangle has three sides A triangle may have four vertices. Any three line-segment make up a triangle The interior of a triangle includes its vertices. The triangular region includes the vertices of the corresponding triangle. The vertices of a triangle are three collinear points. An equilateral triangle is scalene. Every right triangle is scalene. Each acute triangle is equilateral. No isosceles triangle is obtuse.