GEOMETRY MATHS (CLASS 6 )

Dear students this is chapter 20. Go through this content and see page no 175, 176,177 and 178 to know more.

 TRIANGLE                  

A triangle is one of the basic shapes in geometry: a polygon with three corners or vertices and three sides or edges which are line segments.

Types of triangles according to their angles.

A right triangle has one of its interior angles measuring 90° (a right angle).

A triangle that has all interior angles measuring less than 90° is an acute triangle or acute-angled triangle

A triangle that has one interior angle that measures more than 90° is an obtuse triangle or obtuse-angled triangle.

            

                                                                      

Types of angles according to their sides.

In an equilateral triangle all sides have the same length.

In an isosceles triangle, two sides are equal in length.

In a scalene triangle, all sides are unequal, and equivalently all angles are unequal.

                                  

      Obtuse triangle Right triangle 

                                            Acute triangle
  Equilateral triangle         Isosceles triangle   
             

                                    Scalene triangle