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In this study, we investigate an extreme ultraviolet (EUV) wave event on 2010February 11, which occurred as a limb event from the Earth viewpoint and a diskevent from the STEREO--B viewpoint. We use the data obtained by the AtmosphericImaging Assembly (AIA) aboard the Solar Dynamics Observatory (SDO) in variousEUV channels. The EUV wave event was launched by a partial prominence eruption.Similar to some EUV wave events in previous works, this EUV wave event containsa faster wave with a speed of $\sim$445$\pm$6 km s$^{-1}$, which we callcoronal Moreton wave, and a slower wave with a speed of $\sim$298$\pm$5 kms$^{-1}$, which we call "EIT wave". The coronal Moreton wave is identified as afast-mode wave and the "EIT wave" is identified as an apparent propagation dueto successive field-line stretching. We also observe a stationary frontassociated with the fast mode EUV wave. This stationary front is explained asmode conversion from the coronal Moreton wave to a slow-mode wave near astreamer.

Fine Structures of an EUV Wave Event from Multi-Viewpoint Observations