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Abstract.
Augmented reality (AR) technology is a visual technology that combines virtual world
objects into real world views in real time. By utilizing augmented reality technology on an
android smartphone, a geometry object of space can be visualized concretely through threedimension virtual modeling that is similar to the original object. This research incorporates AR
technology into 3dimension space geometry objects and then it is implemented in three
dimension objects lectures for cadets of Ship Machinary Study Program. The purpose of this
research is to find out: how the cadets response in using the AR application. This application is
an application that runs on the android mobile platform, where the AR application requires video
streaming taken from a smartphone camera as an input source, then this application will detect
markers using a tracking system, after the markers have been detected, the object model in the
geometry of the space will appear above the marker as if the object model is real. The methods
or stages in designing this application use the Prototype Model, whereas the implementation of
the application uses a one-group pretest-posttest design pattern. The results showed that the use
of the AR application on the Android platform was able to get a positive response from cadets in
lecturing the Concept of Geometry Course, especially three-dimension objects