Geometric abstraction, when it's done well, delights the eye, engages the mind and satisfies the aesthetic. The excellent examples of the artform presented here, not only offer visual enjoyment, intellectual stimulation and aesthetic satisfaction, they take the viewer further to reveal the artist's joy of making fine art, her respect for the medium and appreciation of precision.

The paintings involve rectilinear shapes drawn with solid lines so they stand apart from the ground yet do not articulate spatial depth. The compositional components of shape, line, ground are in some paintings tonal variations of a single hue while other exhibits involve contrasting colours that dance rather then fight. The interaction of these basic elements create tonal vibrations that activate the 2D surfaces.

Jansen's works may be abstract but we can easily identify her inspirational theme; the city. The paintings refer to either the cool structures of the labyrinth or suggest the warm blood of its inhabitants. For example in High Rise  blue rectangles defined by a silver-blue contour line, rise up in a measured cadence against the sky. Each shade of blue is selected to produce a subtle visual reaction to the others, which changes according to light playing on the surface. Meanwhile White Noise, with its broad orange bars on a warm red ground, can be read as a graph depicting the sounds of life in the city, or the heartbeat of an urban dweller. The cool dark red line that defines the bars causes the orange and warm red to vibrate giving the composition a measured pulse. Then The Green Between has the mind playing with ideas of positive and negative areas; or buildings and parks.

Jansen's wooden constructions also suggest aspects of architecture in their precision and balance.  Her eye for detail and understanding of tonal play that allows her to hint at the illusion of depth in painting is extrapolated when brought into the third dimension. Squares, triangles and rectangles, each with mitred edges, are cut from wood and arranged in layered compositions. All exposed surfaces are painted, either in different colours or related tones, so the optical dance continues no matter the point of view. Look at Shades of Blue side on to find the beat.

What impresses most about this artist's work is how the longer we view these seemingly simple exhibits, the more we realize their complexity. They most certainly delight the eye, engage the mind and satisfy the aesthetic.