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**Chapter 9 Worksheet 1 | Congruent Triangles | Class-7 DAV Secondary Mathematics**

## Unit 9 Worksheet 1 || **Congruent Triangles**

**1. Fill in the blank so as to make a true statement?**

**2. In fig. 9.11, state which pairs of triangles are congruent by SSS congruence condition. If congruent, write the congruence of triangles in symbolic form**.

**3. In fig. 9.12, PS = RS and PQ = RQ**

**4. In Fig. 9.13, ABC is isosceles with AB = AC. D is the mid-point of base BC.**

**5. In PQR and XYZ, PQ = XZ and QR = YZ (fig. 9.14). What additional information is required to make the two triangles congruent by SSS congruence condition?**

**Answer 5:** PR = XY.

**6. If ABC = DEF, fill in the blanks to make each statement true.**

- Chapter 1 Rational Numbers | Class-7 DAV Secondary Mathematics
- Chapter 2 Operations on Rational Numbers | Class-7 DAV Secondary Mathematics
- Chapter 3 Rational Numbers as Decimals | Class-7 DAV Secondary Mathematics
- Chapter 4 Exponents and Powers | Class-7 DAV Secondary Mathematics
- Chapter 5 Application of Percentage | Class-7 DAV Secondary Mathematics
- Chapter 6 Algebraic Expressions | Class-7 DAV Secondary Mathematics
- Chapter 7 Linear Equations in One Variable | Class-7 DAV Secondary Mathematics
- Chapter 8 Triangle and Its Properties | Class-7 DAV Secondary Mathematics
- Chapter 9 Congruent Triangles | Class-7 DAV Secondary Mathematics
- Chapter 10 Construction of Triangles | Class-7 DAV Secondary Mathematics
- Chapter 11 Perimeter and Area | Class-7 DAV Secondary Mathematics
- Chapter 12 Data Handling | Class-7 DAV Secondary Mathematics
- Chapter 13 Symmetry | Class-7 DAV Secondary Mathematics
- Chapter 14 Visualising Solids | Class-7 DAV Secondary Mathematics