Try Now for FREE
- 1. Select your country from the
dropdown. - 2. Mobile : Enter just the mobile no. without any codes
- 3. Landline : Enter the
STD code followed by the phone no. Example 040-66979999.
CBSE - VII
Construction of Triangles
Construction of Triangles
The sum of the measures of the three angles ...
Lesson Demo
1) The sum of the measures of the three angles of a
triangle is 
2) The sum of the lengths of any two sides of a triangle
is always greater than the length of the third side.
3) The difference between the lengths of any two
sides of a triangle is always less than the length of
the third side.
4) The measure of an exterior angle is equal to the
sum of the two remote or opposite interior angles.
Practical Geometry – Construction Of Triangles
The properties of triangles are as follows:
To construct a triangle, we should know any one of the following:
- Length of the three sides
- Two sides and the included angle
- Two angles and the included side
- Length of the hypotenuse and one side in case of a right-angled triangle.
