The digit having only one line of symmetry is_____.

The common properties in the two set-squares of a geometry box are that they have a ______ angle and they are of the shape of a _____.

The digits having only two lines of symmetry are ____ and _____.

The number of digits having no line of symmetry is _____.

The number of capital letters of the English alphabets having only vertical line of symmetry is ____.