1. **Stating the problem:** We have a triangle with vertices J (top), M (bottom), and K (right). Given that $JK = MK$, we need to find the length of $JM$. 2. **Understanding the problem:** Since $JK = MK$, triangle $JMK$ is isosceles with $JK$ and $MK$ as equal sides. 3. **Using the property of isosceles triangles:** In an isosceles triangle, the two equal sides are opposite equal angles. The base is the side opposite these equal sides. 4. **Finding $JM$:** Since $JK = MK$, $JM$ is the base of the isosceles triangle. Without additional information (such as side lengths or angles), the length of $JM$ cannot be determined uniquely. 5. **Conclusion:** More information is needed to find the length of $JM$. If you provide the length of $JK$ or $MK$, or any angle measures, we can calculate $JM$. 6. **Regarding "7.q":** This appears unrelated or incomplete; please clarify if it is a separate question.