Perspective is not an element of layout and composition, but rather a technique used to create the illusion of depth in a two-dimensional image.

Balance is the principle of layout and composition that refers to the arrangement of elements in a way that creates a sense of order and stability. It can be achieved through symmetry, asymmetry, or radial balance.

Dynamic balance is not a type of balance in layout and composition. Symmetrical balance, asymmetrical balance, and radial balance are the three main types of balance.

Contrast is the principle of layout and composition that refers to the use of different visual elements to create a sense of interest and excitement. It can be achieved through the use of different colors, shapes, sizes, or textures.

Shape contrast is not a type of contrast in layout and composition. Light and dark contrast, color contrast, and size contrast are the three main types of contrast.

Emphasis is the principle of layout and composition that refers to the use of visual elements to draw attention to a specific area of a design. It can be achieved through the use of contrast, repetition, or isolation.

Using a different shape for the element is not a technique for creating emphasis in layout and composition. Using a larger size, placing the element in a prominent position, and using a contrasting color are all effective techniques for creating emphasis.

Rhythm is the principle of layout and composition that refers to the use of visual elements to create a sense of movement or flow. It can be achieved through the use of repetition, gradation, or radiation.

Radial rhythm is not a type of rhythm in layout and composition. Regular rhythm, irregular rhythm, and progressive rhythm are the three main types of rhythm.

Unity is the principle of layout and composition that refers to the use of visual elements to create a sense of unity and coherence. It can be achieved through the use of repetition, proximity, and alignment.

Using a consistent style is not a technique for creating unity in layout and composition. Using a consistent color palette, using a consistent font family, and using a consistent layout are all effective techniques for creating unity.

Visual hierarchy is the principle of layout and composition that refers to the arrangement of elements in a way that creates a sense of visual hierarchy. It can be achieved through the use of size, color, contrast, and placement.

Using a different shape for the most important elements is not a technique for creating visual hierarchy in layout and composition. Using a larger size, placing the most important elements in a prominent position, and using a contrasting color are all effective techniques for creating visual hierarchy.

Negative space is the principle of layout and composition that refers to the use of negative space to create a sense of balance and harmony. It can be achieved through the use of empty space around elements, or by using negative space to create shapes and forms.

Using negative space to create a sense of movement is not a technique for using negative space effectively in layout and composition. Using negative space to create a sense of balance, harmony, and shapes and forms are all effective techniques for using negative space.