Which statement describes a triangular wave?

Which statement describes a triangular wave?

• A. It has equal rise and fall times and the peak occurs in the middle.
• B. It has instantaneous transitions.
• C. It is a sine wave.
• D. It has exponential rise.

Answer: (A)

A triangular wave is defined by linear ramps up and down with equal durations for rising and falling portions, so the peak occurs halfway through the period. This symmetry—equal rise and fall times and the peak in the middle—matches the classic shape of a triangular waveform. The other descriptions don’t fit: instantaneous transitions would create vertical edges like a square wave, a sine wave is smooth and curved, and an exponential rise is not a straight-line ramp.

A triangular wave is defined by linear ramps up and down with equal durations for rising and falling portions, so the peak occurs halfway through the period. This symmetry—equal rise and fall times and the peak in the middle—matches the classic shape of a triangular waveform. The other descriptions don’t fit: instantaneous transitions would create vertical edges like a square wave, a sine wave is smooth and curved, and an exponential rise is not a straight-line ramp.