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4. Which one of these is not a type of triangle?

a. Equilateral
b. Scalene
c. Isosceles
d. None of these.

2 Answers

1 vote
Answer: None of these.


Explanation: Equilateral, scalene, and isosceles are all types of triangles
User Robert Pankowecki
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3 votes

Answer: D.

Explanation:

Equilateral, scalene, and isosceles are all valid types of triangles.

User Peter Lucas
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