Hello Ms. Aysel, We have created your attached roof according to your request. Click the roof command according to the floor you have defined. Create your roof by specifying the corner points of your project. Click the change roof eaves properties command from the roof dialog that opens when you click the roof command and click the edge of the roof you want to make a gable wall, enter 90 in slope and enter 3D. Also, make the create command inactive. Do the same for the other gable wall. Click the wall command, define a wall for the surfaces you want to create a gable wall and let its height exceed the height of the roof. Click tools-cut with roof command, select the roof, press the right button and select the object to be cut and press the left button, the top trimming command will remain active and press OK. Take it easy, good work