classification of triangles

Solution of triangles - We have studied that a triangle has six parts or six elements viz three sides and three angles. From geometry, we know that when any three elements are given of which necessarily a side is given, the triangle is completely determined i.e, remain..

From geometry, we know that when any three elements are given of which necessarily a side is given, the triangle is completely determined i.e, remaining three elements can be determined. The process of determining the unknown elements knowing the known elements is known as the solut..

Similar triangles have => same shape and perimeter proportional to the sides. or same perimeters and areas proportional to the sides. or same altitudes and areas proportional to the sides. or same size and areas proportional to the sides...

Congruent Triangles - When two triangles have (i) the same shape, and (ii) the same size, then they are said to be congruent triangles. Symbol for congruency is Draw with AB = 4 cm, AC = 5 cm, and . Also with DE = 4 cm, DF = 5 cm and Draw these triangles on a..

In any triangle ABC, prove that the area of a triangle ABC is given by ..

Area of a triangle - If the coordinates of the vertices of the D ABC are A(x 1 ,y 1 ), B(x 2 ,y 2 ) and C(x 3 ,y 3 ), then the area of triangle is given ..

If the coordinates of the vertices of the D ABC are A(x 1 ,y 1 ), B(x 2 ,y 2 ) and C(x 3 ,y 3 ), then the area of triangle is given ..

We have already learnt in the previous class that the area of triangle whose vertices are (x 1 , y 1 ), (x 2 , y 2 ), (x 3 , y 3 ) is given by Hence area of a triangle having vertices at (x 1 , y 1 ), (x 2 , y 2 ) and (x 3 , y 3 ) is given by..

If the coordinates of the vertices of the D ABC are A(x 1 ,y 1 ), B(x 2 ,y 2 ) and C(x 3 ,y 3 ..

Every geometric figure has a shape and a size. Two circles of different radii have the same shape but their sizes are different. But if we draw two circles of the same radius both the shape and size will be the same. Such figures with the same shape and size are called congruent figures. We c..