Středové a obvodové úhly II

Project ID: 
6000000008
Accepted: 
Podoblast: 
Typ: 
Layout: 
Question: 
Na obrázcích jsou znázorněné ciferníky hodin. Přiřaďte k vyznačeným úhlům jejich velikost:
Question 1 Image: 
Answer 1: 
$105^\circ $
Question 2 Image: 
Answer 2: 
$135^\circ $
Question 3 Image: 
Answer 3: 
$120^\circ $
Question 4 Image: 
Answer 4: 
$150^\circ $
Question 5 Image: 
Answer 5: 

$90^\circ $

Question 6 Image: 
Answer 6: 
$75^\circ $
Tex: 
%http://math4u.vsb.cz/ticket/31915 \newcommand\OBR[4][4mm]{ \obrMsr{-1.3,1.35,-1.3,1.35}[3cm,] { %\obrClip \footnotesize \obrKrizek {0,0}{below}{} \draw (0,0) circle (1); \foreach \i in {1,...,12} {\draw ({cos(90-(\i)*(360.0/12))},{sin(90-(\i)*(360.0/12))}) node {} coordinate (A\i);} \draw (A#2)--(A#3)--(A#4); \obrUhelB*[#1] {A#2}{A#3}[?]{A#4} \foreach \i in {1,...,12} {\draw ($1.27*(A\i)$) node {\colorbox{white}{\!\!${\i}$\!\!}};} \foreach \i in {1,...,12} {\draw ($1.025*(A\i)$) -- ($0.975*(A\i)$);} } } \otazka{\OBR 9{7}4}{$105^\circ$} \otazka{\OBR[5mm] 1{11}{10}}{$135^\circ$} \otazka{\OBR[5mm] 874}{$120^\circ$} \otazka{\OBR[5mm] 765}{$150^\circ$} \otazka{\OBR 973}{$90^\circ$} \otazka{\OBR 3{10}8}{$75^\circ$} \NastavOD {6} \def\preAnswers{\vspace*{-12pt}}