Test: Angles, Straight Lines - Challenging

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Question 1:   Find an angle corresponding to $\frac{15}{11}$ revolution
${245.45}^{\circ }$
${409.09}^{\circ }$
${151}^{\circ }$
${490.91}^{\circ }$
Question 2:   Find the angle $\alpha$:
$\sphericalangle \alpha =80°$
$\sphericalangle \alpha =45°$
$\sphericalangle \alpha =60°$
$\sphericalangle \alpha =70°$
Question 3:   One of the angles in a triangle equals to an arithmetic mean of all the angles of that triangle. What is the measure of that angle?
${45}^{\circ }$
${60}^{\circ }$
${90}^{\circ }$
${30}^{\circ }$
Question 4:   Find the angle $\alpha$ , when $p\parallel q$:

${60}^{\circ }$
${40}^{\circ }$
${30}^{\circ }$
${50}^{\circ }$
Question 5:   Find the angle $\alpha$ :

${90}^{\circ }$
${100}^{\circ }$
${70}^{\circ }$
${80}^{\circ }$
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