A 45° - 45° - 90° set-square has ______ line/lines of symmetry.
one
A 45° - 45° - 90° set-square is in the form of an isosceles triangle. An isosceles triangle has only one line of symmetry.
40
A 45° - 45° - 90° set-square has ______ line/lines of symmetry.
one
A 45° - 45° - 90° set-square is in the form of an isosceles triangle. An isosceles triangle has only one line of symmetry.