Geometry is the math related to proportions, or size, shape and position, so practical applications of geometry come in measurement and spatial reasoning. Everything from wrapping a gift to designing a backyard landscape is governed by geometry.
People commonly use geometry area problems when working on their homes. Area problems help them decide how much carpet or paint to buy and even which furniture will work in a given space. Likewise, decorating a room or an outdoor area takes spatial reasoning and an arrangement of geometric shapes.
Volume problems are another daily-life use of geometry. People use volume equations to determine how much water goes in a fish tank, how much sand is needed for a sandbox or even how much soil is needed for a window garden.
Elements of plane geometry, or the relationship of two-dimensional shapes on a flat surface, also have their significance in real life. For instance, pool players have to determine angles when shooting the balls across the table. Likewise, angles and symmetry are very important for hairstyling. Hair styles should complement a client's face shape. Likewise, when cutting the hair, hairstylists need to cut at certain angles so that the hair falls in the desired shape. For symmetry, hair actually has to be cut at different lengths to conform to the shape of the client's head.
Finally, many professions such as engineering, interior design, landscape architecture and even furniture moving use geometry as a basis for their work.