The external controls, safety mechanisms, and internal components of a standard portable fire extinguisher.

The fundamental geometric components of a triangle including vertices, sides, base, height, and angles.

The acoustic components, structural joints, and tone holes of a standard baroque recorder.

The fundamental components of standard sheet music notation, including the staff, clef, time signature, barlines, and basic note values.

Standard dimensions, lines, and playing areas of a regulation tennis court.

Standard clinical palpation and auscultation sites used to measure arterial pulse and heart rate across the human body.

The six major types of volcanoes alongside key internal volcanic features.

The world's continents, oceans, major mountain ranges, deserts, and primary river systems on a global physical relief map.

Internal structures of the human heart including chambers, cardiac valves, supporting apparatus, and great vessels in an anterior coronal section.