Expression 20: StartRoot, "R" squared minus "x" squared , EndRoot less than or equal to "y" less than or equal to StartRoot, "R" squared minus "x" squared , EndRootR2−x2≤y≤R22−x2
20
Expression 21: negative StartRoot, "R" squared minus "x" squared , EndRoot greater than or equal to "y" greater than or equal to negative StartRoot, "R" squared minus "x" squared , EndRoot−R2−x2≥y≥−R22−x2
21
Expression 22: "x" squared plus "y" squared less than or equal to "R" squared times left brace, StartAbsoluteValue, "x" , EndAbsoluteValue greater than "R" , right bracex2+y2≤R22·x>R
22
Expression 23: left parenthesis, "R" cos "t" , "R" sin "t" , right parenthesisRcost,Rsint
23
Expression 24: left parenthesis, "R" Subscript, 2 , Baseline cos "t" , "R" Subscript, 2 , Baseline sin "t" , right parenthesisR2cost,R2sint
24
Expression 25: polygon left parenthesis, "A" , "B" , "O" , right parenthesispolygonA,B,O
25
Expression 26: polygon left parenthesis, "C" , "D" , "O" , right parenthesispolygonC,D,O
26
Expression 27: polygon left parenthesis, "A" , "B" , right parenthesispolygonA,B
27
Expression 28: polygon left parenthesis, "C" , "D" , right parenthesispolygonC,D
