Question

Using two set-squares of the geometry box, which of the following angles can be drawn.

• A. ${45}^{\circ }$
• B. ${30}^{\circ }$
• C. ${15}^{\circ }$
• D. ${10}^{\circ }$

Answer 1

Answer: (A), (B), (C)

The correct options are
A ${45}^{\circ }$
B ${30}^{\circ }$
C ${15}^{\circ }$

Using a ${45}^{\circ }$ - ${90}^{\circ }$ - ${45}^{\circ }$ set square ${45}^{\circ }$ angle can be drawn. Similarly, using a ${30}^{\circ }$ - ${90}^{\circ }$ - ${60}^{\circ }$ set square ${45}^{\circ }$ angle can be drawn.

First draw a ${45}^{\circ }$ angle (∠ABC) using one of the set-squares. Place the other set-square alligned with the base and draw a ${30}^{\circ }$ angle (∠ABD). Thus resulting an angle (∠DBC) of ${15}^{\circ }$.


${45}^{\circ }$ - ${30}^{\circ }$ = ${15}^{\circ }$