1: The sides of this rectangle measure 6 inches by 2 1/2 inches. The angles of this rectangle measure 90 degrees. | The sides of this triangle measure 1 3/4 inch. The angles of this triangle measure 60 degrees.
2: If the railroad tracks were not parallel then when the train tried to go on them, the train would run off the track. | If the columns on the building were not parallel then the building would fall. The columns are supporting the building so it will stay standing.
3: If the sleeves on the shirt were not congruent then one sleeve would be longer than the other and the shirt would fit differently. | If the pant legs on the pants were not congruent then they would be different sizes. One would be longer than the other.
4: This logo has line symmetry. | This logo has line symmetry and rotational symmetry.
5: Cylinder | Cone | Pyramid | Prism
6: Architecture has a lot to do with geometry. In architecture you deal with a lot of shapes and math.