Words to Describe perpendiculars

How perpendiculars often is described ("________ perpendiculars")

• opposite
• intermediate
• regular
• such
• dotted
• equilateral
• gothic
• similar
• clean
• several
• square
• parallel
• vertical
• acute
• common
• exact
• congruent
• equal
• focal
• corresponding
• short
• dihedral
• respective
• extreme
• rigid
• after
• horizontal
• diagonal
• isosceles
• like
• adjacent
• imaginary
• successive
• straight
• indefinite
• erect