如图,直线1分别与直线AB,CD相交于点E,F,EG平分∠BEF交直线CD于点G若∠1=∠BEF=68°,则∠EGF的度数为---**Extracted Content:** **Question Number:** 12 **Question Stem:** 如图, 直线 l 分别与直线 AB, CD 相交于点 E, F, EG 平分 ∠BEF 交直线 CD 于点 G. 若 ∠1 = ∠BEF = 68°, 则 ∠EGF 的度数为 ______. **Given Information:** 直线 l 分别与直线 AB, CD 相交于点 E, F. EG 平分 ∠BEF 交直线 CD 于点 G. ∠1 = ∠BEF = 68°. **Requested Information:** ∠EGF 的度数. **Diagram Description:** * **Type:** Geometric figure showing intersecting lines and angles. * **Elements:** * Three lines are shown. Two horizontal lines labeled AB and CD. A transversal line labeled l intersects AB at point E and CD at point F. * A line segment EG originates from E and intersects CD at G. * Point A is to the left of E on line AB. Point B is to the right of E on line AB. * Point C is to the left of F on line CD. Point D is to the right of G on line CD. Point G is between F and D on line CD. * Angle 1 ($\angle 1$) is marked between line l and line CD, specifically the angle formed by line segment FG and line segment Fl, which is on the upper left side of point F. * The line segment EG is shown originating from E and going towards G on line CD. * **Labels:** Lines are labeled l, AB, CD. Points are labeled A, B, C, D, E, F, G. Angle is labeled 1. * **Annotation:** "第 12 题图" (Figure for question 12) is below the diagram.