Chapter 10 | Construction of Triangles | Class-7 DAV Secondary Mathematics

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Chapter 10 Worksheet 1 | Construction of Triangles | Class-7 DAV Secondary Mathematics

Unit 10 Worksheet 1 || Construction of Triangles

1. Construct a triangle LMN in which LM = 5 cm, MN = 5.6 cm and NL = 4.2 cm.

Answer 1.

Chapter 10 | Construction of Triangles | Class-7 DAV Secondary Mathematics

2. Draw a triangle DEF such that DE = DF = 4 cm and EF = 6 cm. Measure E and F.

Answer 2.

Chapter 10 | Construction of Triangles | Class-7 DAV Secondary Mathematics

3. Draw an equilateral triangle one of whose sides is of length 5 cm.

Answer 3.

Chapter 10 | Construction of Triangles | Class-7 DAV Secondary Mathematics

4. Draw a triangle PQR in which PQ = 3 cm, QR = 4 cm, RP = 5 cm. Also, draw perpendicular bisector of side PQ.

Answer 4.

Chapter 10 | Construction of Triangles | Class-7 DAV Secondary Mathematics

5. Is it possible to construct a triangle whose sides are 3 cm, 6.1 cm and 2.6 cm?

Answer 5.

Chapter 10 | Construction of Triangles | Class-7 DAV Secondary Mathematics

6. Draw a triangle PQR in which PQ = 7 cm, QR = 3 cm, RP = 4 cm. Is the construction of triangle possible?

(Hint: The arcs will touch on the line QR. The base line OR, QP, PR are all collinear.)

Answer 6.

Chapter 10 | Construction of Triangles | Class-7 DAV Secondary Mathematics

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