Question
Given a line BC and a point A on it, construct a ray AD using set squares so that $\angle DAC$ is: $30^{\circ}$
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Answer
Draw a line $B C$ and take a point $A$ on it. Place $30^{\circ}$ set-square on the line $B C$ such that its vertex of $30^{\circ}$ angle lies on point $A$ and one edgecoincides with the ray $A B$ as shown in figure. Draw the ray $A D$.
Thus $\angle DAC$ is the required angle of $30^{\circ}$.
Thus $\angle DAC$ is the required angle of $30^{\circ}$.
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