1. The problem asks to find the missing sides of a triangle or geometric figure, but no specific figure or side lengths are given. 2. To find missing sides, we typically use formulas such as the Pythagorean theorem for right triangles: $$c=\sqrt{a^2+b^2}$$ where $c$ is the hypotenuse and $a$, $b$ are the legs. 3. If the triangle is not right-angled, we use the Law of Sines: $$\frac{a}{\sin A}=\frac{b}{\sin B}=\frac{c}{\sin C}$$ or the Law of Cosines: $$c^2=a^2+b^2-2ab\cos C$$. 4. Without specific side lengths or angles, we cannot calculate the missing sides. 5. Please provide the figure type and known side lengths or angles to proceed with calculations.