3p
Gegeven is \(\triangle K\kern{-.8pt}L\kern{-.8pt}M\) met \(\angle K = 56\degree\) en \(\angle L = 73\degree \text{.}\)
Bereken \(\angle \text{M} \text{.}\)
Rond indien nodig af op één decimaal.
○
De som van de hoeken in \(\triangle K\kern{-.8pt}L\kern{-.8pt}M\) geeft \(\angle K + \angle L + \angle M = 180\degree \text{.}\)
1p
○
Dus \(\angle M = 180\degree - \angle K - \angle L \text{.}\)
1p
○
\(\angle M = 180\degree - 56\degree - 73\degree = 51\degree \text{.}\)
1p
3p
Gegeven is \(\triangle P\kern{-.8pt}Q\kern{-.8pt}R\) met \(\angle Q = 35\degree\) en \(\angle R = 40\degree \text{.}\)
Bereken \(\angle \text{P} \text{.}\)
Rond indien nodig af op één decimaal.
○
De som van de hoeken in \(\triangle P\kern{-.8pt}Q\kern{-.8pt}R\) geeft \(\angle Q + \angle R + \angle P = 180\degree \text{.}\)
1p
○
Dus \(\angle P = 180\degree - \angle Q - \angle R \text{.}\)
1p
○
\(\angle P = 180\degree - 35\degree - 40\degree = 105\degree \text{.}\)
1p