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            <Attribute name="title">उपपत्ति: समांतर चतुर्भुज के सम्मुख कोण (Proof: Opposite angles of a parallelogram)</Attribute>
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            <video:title>उपपत्ति: समांतर चतुर्भुज के सम्मुख कोण (Proof: Opposite angles of a parallelogram)</video:title>
            <video:description>Sal proves that opposite angles of a parallelogram are congruent.</video:description>
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            <Attribute name="description">सिद्ध करें कि समचतुर्भुज के विकर्ण एक दूसरे पर लम्ब होते हैं और उनका प्रतिच्छेदन बिंदु, मध्यबिंदु होता है |</Attribute>
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            <video:description>सिद्ध करें कि समचतुर्भुज के विकर्ण एक दूसरे पर लम्ब होते हैं और उनका प्रतिच्छेदन बिंदु, मध्यबिंदु होता है |</video:description>
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