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Draw a Line Segment Ab of Length 5.3 Cm. Using Two Different Methods Bisect Ab. - Mathematics

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Sum

Draw a line segment AB of length 5.3 cm. Using two different methods bisect AB.

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Solution

Steps of Construction :

  1. Draw a line segment AB = 5.3 cm
  2. With A as centre and radius equal to more than half of AB, draw arcs on both sides of AB.
  3. With B as the centre and with the same radius as taken in step 2, draw arcs on both sides of AB.
  4. Let the arcs intersect each other at points P and Q.
  5. Join P and Q.
  6. The line PQ cuts the given line segment AB at point O.
    Thus, PQ is a bisector of AB such that
    OA = OB = `1/2`AB

Second Method

Steps of Construction :

  1. Draw the given line segment AB = 5.3 cm.
  2. At A, construct ∠PAB of any suitable measure. Then ∠PAB = 60° construct ∠QBA = 60°
  3. 3. From AP, cut AR of any suitable length and from BQ; cut BS = AR.
  4. Join R and S
  5. Let RS cut the given line segment AB at the point O.
    Thus RS is a bisector of AB such that OA = OB = `1/2`AB
Concept: Construction of an Angle - To Draw the Bisector of a Given Angle
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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 18 Constructions
Exercise 18 (B) | Q 1 | Page 204
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