Related Clues:
- r's, in math
- They start in the middle
- Semi-diameters
- Parts of forearms
- Two make a diameter
- Center-to-rim lines
- Circle measures
- Pie cuts, geometrically
- Spokes, say
- Pie cuts, basically
- Pie slice edges, geometrically
- They connect to scapulae
- Straight edges of pizza slices, essentially
- Geometry-class measurements
- They're parallel to 105-Down