TEST 3
1.
\(m\left(\widehat{EOF}\right)=20^\circ\)
\(\Rightarrow m\left(\widehat{DOE}\right)=\alpha=?\)
A) \(20\)B) \(70\)C) \(120\)D) \(140\)E) \(160\)
2.
\(m\left(\widehat{AOB}\right)=\alpha\)
\(m\left(\widehat{BOC}\right)=2\alpha-15^\circ\)
\(\Rightarrow\alpha=?\)
A) \(50\)B) \(55\)C) \(60\)D) \(65\)E) \(75\)
3.
\([OA\perp[OB\)
\(m\left(\widehat{COB}\right)=30^\circ\)
\(\Rightarrow m\left(\widehat{AOC}\right)=\alpha=?\)
A) \(20\)B) \(30\)C) \(50\)D) \(60\)E) \(150\)
4.
\(m\left(\widehat{COD}\right)=m\left(\widehat{DOB}\right)=40^\circ\)
\(\Rightarrow m\left(\widehat{AOC}\right)=\alpha=?\)
A) \(40\)B) \(80\)C) \(90\)D) \(100\)E) \(140\)
5.
\(d_1\parallel d_2\)
\(m\left(\widehat{ABC}\right)=70^\circ\)
\(\Rightarrow m\left(\widehat{BCD}\right)=\alpha=?\)
A) \(20\)B) \(30\)C) \(70\)D) \(100\)E) \(110\)
6.
\(d_1\parallel d_2\)
\(m\left(\widehat{BCD}\right)=40^\circ\)
\(\Rightarrow m\left(\widehat{ABC}\right)=\alpha=?\)
A) \(20\)B) \(40\)C) \(50\)D) \(60\)E) \(140\)
7.
\(d_1\parallel d_2\)
\(m\left(\widehat{BCD}\right)=80^\circ\)
\(\Rightarrow m\left(\widehat{CDE}\right)=m\left(\widehat{EDF}\right)=\alpha=?\)
A) \(5\)B) \(10\)C) \(40\)D) \(50\)E) \(100\)
8.
\(d_1\parallel d_2\)
\(m\left(\widehat{BCD}\right)=55^\circ\)
\(\Rightarrow m\left(\widehat{ABC}\right)=\alpha=?\)
A) \(125\)B) \(115\)C) \(75\)D) \(60\)E) \(55\)