Given: JLMN is a parallelogram made up of trapezium JKMN and isosceles triangle KLM.<br><br>In parallelogram JLMN, opposite sides are parallel and opposite angles are equal.<br>In isosceles triangle KLM, two sides and two base angles are equal.<br><br>Using these properties and the given angles in the diagram:<br>∠JKM = 26° and ∠KJN = 23° (or their ratio simplifies to 26 : 23).<br><br>Final Answer: 26 : 23