Question
Construct the following angles using set-squares: $105^\circ $
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Answer
Place the vertex of $45^\circ $ of the set-square and make angle of $90^\circ $ by drawing the rays $BD$ and $BC$ as shown in the figure
Now, place the vertex of $30^\circ $ of the set-square on the ray $BS$ as shown in the figure and draw the ray $BA$ The angle so formed is $150^\circ $. Therefore, $\angle\text{ABC}=150^{\circ}$
Now, place the vertex of $30^\circ $ of the set-square on the ray $BS$ as shown in the figure and draw the ray $BA$ The angle so formed is $150^\circ $. Therefore, $\angle\text{ABC}=150^{\circ}$
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