Question

Question 15

Out of the given four options, only one is correct. Write the correct answer.

The number of lines of symmetry in a ${45}^0-{45}^0-{90}^0$ set square is

(a) 0 (b) 1 (c) 2 (d) 3

Answer 1

The "Line of Symmetry" is the imaginary line where you could fold the image and have both halves match exactly.

Since a ${45}^0-{45}^0-{90}^0$ set square has a shape of an isosceles triangle and an isosceles triangle has one line of symmetry as shown below.

Hence, the correct answer is option (b).

Note: In the given set square two angles are same, it means two sides will be same. So, the shape of the set square is an isosceles triangle.