EntityQ1257456· pop 21· linked from 106 articlestriangle waveSign in to savenon-sinusoidal waveform named for its triangular shapeConnectionsinverse trigonometric functionEntitysine waveEntitysine and cosineEntitysoundEntitytriangleEntitywaveEntityintegralEntityderivativeEntityabsolute valueEntityFourier seriesEntityFourier transformEntitycontinuous functionEntityperiodic functionEntitydomain of a functionEntityzero of a functionEntityeven and odd functionsEntityMathWorldEntityarc lengthEntitycodomainEntityovertoneEntityCategoriesFourier seriesWaveforms