NAGALAND Class 10 Maths Constructions
Division of a Line Segment
Division of a line SegmentConstructions of Similar Triangles
Scale factor is the ratio of the size of the new figure (which will be constructed) to that of the given figure.
The scale factor may be < 1 or > 1.
If the scale factor is < 1, then the new figure will be smaller in size to the given figure.
If the scale factor is > 1, then the new figure will be greater in size to the given figure.
Taking scale factor into consideration we divide a line segment in the specified ratio and use it to draw a triangle, similar to a given triangle, with sides proportional to the sides of given triangle.Construction of Tangents
A tangent is perpendicular to the radius through the point of contact.
Number of tangents from a point on the circle is only one.
Number of tangents from a point outside the circle is two.
The two tangents to the circle from a point outside the circle are equal in length.