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Teorema fundamentala a asemanarii si criterii de asemanare

Authored by Denis .

Mathematics

7th Grade

Used 46+ times

Teorema fundamentala a asemanarii si criterii de asemanare
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

in criteriul L.L.L. Doua triunghiuri sunt asemenea daca au ........ corespondente proportionale

unghiurile

laturile

doua perechi de laturi

doua perechi de unghiuri

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Dacă ΔABC∼ΔDEF, AB=14 cm și BC=18 cm, iar raportul de asemănare este 1/2, calculați lungimea segmentului [DE]

50

36

28

7

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Teorema fundamentala a asemanarii spune ca o paralela dusa la una dintre laturile unui triunghi formeaza cu celalte doua laturi un ..... asemenea cu cel dat.

triunghi

patrat

cerc

dreptunghi

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In triunghiul ABC consideram punctul D ∈ (AB) si construim DE ║ BC , E ∈ (AC)

AB =25 cm , BC=20 cm , CA=30 cm si DE=4 cm , Perimetrul triunghiului ADE

12

25cm

30cm

15cm

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Daca ΔABC~ΔMNP , AB=6cm , MN=4cm, MP=2cm , NP=6cm , calculati AC

3cm

9cm

28cm

26cm

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Daca ΔABC~ΔDEF , AB=10cm , BC=12cm si raportul de asemanare este k=2 , calculati lungimea DE

5cm

7cm

4cm

1cm

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Daca ΔACB~ΔDMP , <A=35° , <C=73° , <D=?°

35°

40°

90°

55°

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