document.write( "Question 1177180: Given: Segment NK is a median of triangle JMN; IN>NM Prove: m<1>m<2 \n" ); document.write( "
Algebra.Com's Answer #850508 by CPhill(1959)\"\" \"About 
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**1. Given Information**\r
\n" ); document.write( "\n" ); document.write( "* NK is a median of triangle JMN. This means that NK bisects side JM, so JK = KM.
\n" ); document.write( "* IN > NM\r
\n" ); document.write( "\n" ); document.write( "**2. Triangle Inequality Theorem**\r
\n" ); document.write( "\n" ); document.write( "In any triangle, the sum of the lengths of any two sides must be greater than the length of the third side.\r
\n" ); document.write( "\n" ); document.write( "**3. Applying the Triangle Inequality Theorem to Triangle INK**\r
\n" ); document.write( "\n" ); document.write( "* IN + NK > IK \r
\n" ); document.write( "\n" ); document.write( "**4. Applying the Triangle Inequality Theorem to Triangle NMK**\r
\n" ); document.write( "\n" ); document.write( "* NM + NK > MK\r
\n" ); document.write( "\n" ); document.write( "**5. Using the Given Information and Steps 3 and 4**\r
\n" ); document.write( "\n" ); document.write( "* Since IN > NM (given), and NK is common to both triangles INK and NMK, we can conclude that:
\n" ); document.write( " IN + NK > NM + NK
\n" ); document.write( "* This further implies that IK > MK\r
\n" ); document.write( "\n" ); document.write( "**6. Relating IK and MK to JK and KM**\r
\n" ); document.write( "\n" ); document.write( "* We know that JK = KM (because NK is a median).
\n" ); document.write( "* Therefore, IK > JK\r
\n" ); document.write( "\n" ); document.write( "**7. Hinge Theorem**\r
\n" ); document.write( "\n" ); document.write( "The Hinge Theorem states that if two triangles have two congruent sides, then the triangle with the larger included angle has the longer third side.\r
\n" ); document.write( "\n" ); document.write( "**8. Applying the Hinge Theorem**\r
\n" ); document.write( "\n" ); document.write( "* In triangles JNK and KNM:
\n" ); document.write( " * JN = NM (given)
\n" ); document.write( " * NK = NK (common side)
\n" ); document.write( " * IK > JK (from step 6)
\n" ); document.write( "* Therefore, by the Hinge Theorem, m∠1 > m∠2.\r
\n" ); document.write( "\n" ); document.write( "**Conclusion**\r
\n" ); document.write( "\n" ); document.write( "We have successfully proven that m∠1 > m∠2 using the given information, the Triangle Inequality Theorem, and the Hinge Theorem.
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