 # Constructing Triangles - SSS

The construction of triangle using SSS criteria is possible when all the three sides are known to us.  The requirement for construction are : A ruler and a compass.

Let us consider a triangle ABC, having the measurement of sides equal: AB = 7 cm, BC = 4 cm and CA = 6 cm. The steps for construction of triangle are:

• Step 1: Mark a point A.
• Step 2: Measure the length of 7 cm using compass and scale.
• Step 3: With the help of Compass mark an arc placing pointer at point A.
• Step 4: Mark a point B on the arc. • Step 5: Now measure the length of 6 cm.
• Step 6: Again using compass mark an arc above point B using the same point (A). • Step 7: Measure the length of 4 cm.
• Step 8: Using the compass placed at point B cut an arc such that it crosses the previous arc. • Step 9: Name the point as C where the two arc cross each other.
• Step 10: At the end, join the points A, B and C with the help of a ruler to give the required triangle. Thus, you obtain a triangle ABC of the required measurements.