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Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 7

Construct a triangle ABC with given conditions. AB = 7 cm, AC = 6.5 cm and ∠A = 120° - Mathematics

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Question

Construct a triangle ABC with given conditions.

AB = 7 cm, AC = 6.5 cm and ∠A = 120°

Diagram
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Solution



Construction:

Step 1: Drawn a line. Marked A and B on the line such that AB = 7 cm.

Step 2: At A, drawn a ray AX making an angle of 120° with AB.

Step 3: With A as centre, drawn an arc of radius 6.5 cm to cut the ray AX.

Marked the point of intersection as C.

Step 4: Joined BC.

ABC is the required triangle.

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Chapter 4: Geometry - Exercise 4.2 [Page 85]

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Samacheer Kalvi Mathematics - Term 2 [English] Class 7 TN Board
Chapter 4 Geometry
Exercise 4.2 | Q 7. II. (i) | Page 85

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