TEST 5
1.
\(m\left(\widehat{AOC}\right)=m\left(\widehat{COD}\right)\)
\(m\left(\widehat{DOE}\right)=m\left(\widehat{EOB}\right)\)
\(\Rightarrow m\left(\widehat{COE}\right)=?\)
A) \(30\)B) \(60\)C) \(90\)D) \(120\)E) \(150\)
2.
\(m\left(\widehat{AOC}\right)=m\left(\widehat{COD}\right)\)
\(m\left(\widehat{DOE}\right)=40^\circ\)
\(m\left(\widehat{EOF}\right)=m\left(\widehat{FOB}\right)\)
\(\Rightarrow m\left(\widehat{COF}\right)=?\)
A) \(50\)B) \(60\)C) \(100\)D) \(110\)E) \(130\)
3.
\(m\left(\widehat{AOC}\right)=m\left(\widehat{COD}\right)\)
\(m\left(\widehat{DOE}\right)=70^\circ\)
\(m\left(\widehat{EOF}\right)=m\left(\widehat{FOB}\right)\)
\(\Rightarrow m\left(\widehat{COF}\right)=?\)
A) \(80\)B) \(115\)C) \(125\)D) \(135\)E) \(140\)
4.
\(d_1\parallel d_2\)
\(m\left(\widehat{ABC}\right)=x+30^\circ\)
\(m\left(\widehat{BCD}\right)=2x-15^\circ\)
\(\Rightarrow x=?\)
A) \(35\)B) \(45\)C) \(50\)D) \(55\)E) \(60\)
5.
\(d_1\parallel d_2\)
\(d_3\parallel d_4\)
\(m\left(\widehat{ABC}\right)=50^\circ\)
\(\Rightarrow m\left(\widehat{DEF}\right)=\alpha=?\)
A) \(20\)B) \(30\)C) \(40\)D) \(50\)E) \(70\)
6.
\([EF]\parallel[BC]\)
\(m\left(\widehat{EAB}\right)=\alpha\)
\(m\left(\widehat{ABC}\right)=40^\circ\)
\(m\left(\widehat{FAC}\right)=\beta\)
\(m\left(\widehat{ACB}\right)=70^\circ\)
\(\Rightarrow\beta-\alpha=?\)
A) \(30\)B) \(40\)C) \(50\)D) \(60\)E) \(70\)
7.
\(d_1\parallel d_2\)
\(d_3\parallel d_4\)
\(m\left(\widehat{AOB}\right)=50^\circ\)
\(\Rightarrow m\left(\widehat{EDC}\right)=\alpha=?\)
A) \(130\)B) \(100\)C) \(60\)D) \(50\)E) \(40\)
8.
\(d_1\parallel d_2\)
\(m\left(\widehat{ABC}\right)=100^\circ\)
\(m\left(\widehat{BCD}\right)=140^\circ\)
\(\Rightarrow m\left(\widehat{CDE}\right)=\alpha=?\)
A) \(100\)B) \(110\)C) \(120\)D) \(130\)E) \(140\)