Paralelism si Perpendicularitate
Quiz
•
Mathematics
•
8th Grade
•
Practice Problem
•
Hard
Baltariga Anca
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10 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Fie paralelipipedul dreptunghic ABCDA’B’C’D’ cu O centrul lui ABCD și AB = BC = 4 cm. Dacă măsura unghiului dintre BC și D’O este de 60 , atunci distanța de la punctul A’ la dreapta D’O este egală cu:
√2 cm
√3 𝑐𝑚
2√2 𝑐𝑚
2√3 cm
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
2a
a
a√3
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
În piramida triunghiulară regulată VABC, cu vârful în V, muchia laterală formează cu planul bazei un unghi cu măsura de 30 . Dacă muchia laterală VA are lungimea egală cu 6 cm, atunci aria bazei este egală cu:
27
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
În piramida triunghiulară regulată VABC, cu vârful în V, muchia laterală formează cu planul bazei un unghi cu măsura de 30. Se notează cu O centrul de greutate al bazei și cu G centrul de greutate al triunghiului VBC. Dacă OG = 4 cm, atunci lungimea înălțimii piramidei VABC este egală cu:
3
6
9
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Fie ABCD un romb cu BD = 8 cm și măsura unghiului ABC egală cu 120 . În punctul A se ridică perpendiculara AP pe planul rombului astfel încât AP =BD. Distanța de la punctul P la dreapta BC este egală cu:
8
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