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Sahay Sir > Question Answers > NCERT Class 9 > Maths > Chapter 10 - Circles > 6. If two chords AB and CD of a circle AYDZBWCX intersect at right angles (see Fig.10.18), prove that arc CXA + arc DZB = arc AYD + arc BWC = semicircle.

6. If two chords AB and CD of a circle AYDZBWCX intersect at right angles (see Fig.10.18), prove that arc CXA + arc DZB = arc AYD + arc BWC = semicircle.

6. If two chords AB and CD of a circle AYDZBWCX intersect at right angles (see Fig.10.18) prove that arc CXA + arc DZB = arc AYD + arc BWC = semicircle.