In this section of RS Aggarwal Class 9 Chapter 9 Exercise 9A Solution, we provide step by step solutions of all questions therefore, each student can understand the concept easily.
RS Aggarwal and Veena Aggarwal Class 9 Ex. 9a Solution
























Let AB is a breadth of the river and take a point M on the side B (shown in the fig.).
Let O is mid-point of BM, Now walk perpendicular to BM, from M to N and when AON come in straight line, then stop.
Now and are congruence . Thus, MN = AB , which is breadth of the river.

26: “If two sides and an angle of one triangle are equal to two sides and an angle of another triangle then the two triangles must be congruent” Is the statement true? Why?
Solution 26:
The given statement is not true. It must be two sides and the included angle.
27: “If two angles and a side of one triangle are equal to two angles and a side of another triangle then the two triangles must be congruent.” Is the statement true? Why?
Solution 27:
The given statement is not true. The sides must be corresponding sides.
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