Final answer:
The significant design elements in Martin's poster with the telephone are color and texture, which, alongside shape, contribute to the poster's visual impact. Principles of composition like balance and harmony also play a role in the image's overall effect.
Step-by-step explanation:
Martin's composition of a poster with an image of an olden day telephone with its coiled wire placed in the shape of a heart uses several design elements to create a cohesive and meaningful piece. The shape is very prominent, as mentioned, but two other significant elements in this image are color and texture. These elements, along with the phone's distinctive shape, add depth and interest to the composition. The color of the telephone can convey emotions or set the period style, helping to establish the mood of the piece. The texture can refer to the physical feel of the telephone, suggesting its materiality, or the visual depiction of the texture in the image that enhances the sensory experience of the viewer.
Furthermore, the principles of composition, such as balance and harmony, are also essential in creating a visually pleasing image. The positioning of the telephone may provide a center of gravity or weight, contributing to the image's balance. The way the coiled wire creates a heart can symbolize love or connection, which contributes to the overall harmony and unity of the picture. These thoughtful choices in the design elements and composition principles work together to give the poster its aesthetic and emotional impact.