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Procedure : (i) Draw a circle with cen...

Procedure :
(i) Draw a circle with centre O and with suitable radius.
(ii) Make it a semi - circle through folding . Consider the poin A,B on it
(iii) Make crease along AB in the semi circles and open it.
(iv) We get one more crease line on the another part of semi circle, name it as CD (observe AB= CD)
(v) Join the radius to get the `DeltaOAB` and `DeltaOCD`.
(vi) Using trace paper, take the replicas of triangle `DeltaOAB` and `DeltaOCD`
(vii) Place these triangles `DeltaOAB` and `DeltaOCD` one on the other.
Observation :
(i) What do you observe ? Is `DeltaOAB-=DeltaOCD` ?
(ii) Construct perpendicular line to the chords AB and CD passing through the centre O. Measure the distance from O to the chords

Answer

Step by step text solution for Procedure : (i) Draw a circle with centre O and with suitable radius. (ii) Make it a semi - circle through folding . Consider the poin A,B on it (iii) Make crease along AB in the semi circles and open it. (iv) We get one more crease line on the another part of semi circle, name it as CD (observe AB= CD) (v) Join the radius to get the DeltaOAB and DeltaOCD. (vi) Using trace paper, take the replicas of triangle DeltaOAB and DeltaOCD (vii) Place these triangles DeltaOAB and DeltaOCD one on the other. Observation : (i) What do you observe ? Is DeltaOAB-=DeltaOCD ? (ii) Construct perpendicular line to the chords AB and CD passing through the centre O. Measure the distance from O to the chords by MATHS experts to help you in doubts & scoring excellent marks in Class 9 exams.

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Knowledge Check

  • Angle in a semi - circle is . . . . . . . .

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