A1. Dana sta dva trikotnika s stranicami $a=5 \mathrm{~cm}, b=3 \mathrm{~cm}, c=7 \mathrm{~cm}$ in $a_{1}=10 \mathrm{~cm}$, $b_{1}=6 \mathrm{~cm}, c_{1}=14 \mathrm{~cm}$. Kaj lahko poveste o teh dveh trikotnikih?
(A) Sta skladna.
(B) Sta si podobna.
(C) Sta pravokotna.
(D) Sta enakokraka.
(E) Sta ploščinsko enaka.

A1. Two triangles are given with sides $a=5 \mathrm{~cm}, b=3 \mathrm{~cm}, c=7 \mathrm{~cm}$ and $a_{1}=10 \mathrm{~cm}$, $b_{1}=6 \mathrm{~cm}, c_{1}=14 \mathrm{~cm}$. What can you say about these two triangles?
(A) They are congruent.
(B) They are similar.
(C) They are right-angled.
(D) They are isosceles.
(E) They are equal in area.
A1. The ratio of the corresponding sides of both triangles is $1: 2$, so the triangles are similar.