Are there any lines off symmetry in a `45^(@)-45^(@)-90^(@)` set square ?

How many lines of symmetry are there in the following a. divider b. compass c. 45^(@)-45^(@)-90^(@) set square. d. 30^(@)-60^(@)-90^(@) set square.

What is the minimum value of the refractive index for a 90^(@)-45^(@)-45^(@) prism which is used to deviate a beam through 90^(@) by total internal reflection ?

The refractive index of material of a prism of angles 45^(@) , -45^(@) , and -90^(@) is 1.5. The path of the ray of light incident normally on the hypotenuse side shown in

Trace each figure and draw the lines of symmetry, if any:

The value of sin(45^(@)+theta)-cos(45^(@)-theta) is

Find the value of sin (45^@+theta)-cos (45^@-theta)

The following figures have more than one line of symmetry. Such figures are said to have multiple lines of symmetry. Identify multiple lines of symmetry, if any, in each of the following figures:

Find the slope of a line whose inclination is 45^(@)

Draw the line ( or lines ) of symmetry , if any of the following shapes and count their number:

Find the slope of line whose inclination is 45^@