Question

In the figure below, A , B , C , and D lie on the circle centered at O
Which of the following does NOT appear in the figure?

Acute triangle

Equilateral triangle

Isosceles triangle

Right triangle

Scalene triangle

Answer 1

hai hai which one do u think it is <3

Answer 2

It is either Isosceles or scalene. But it doesn't really show you if its isosceles or scalene.

Answer 3

I think its Isosceles tho.... :/

Answer 4

@extrinix

Answer 5

First let's go through the definition of each of these.

Acute triangle - a triangle that contains all sides under 90\(^o\)
Equilateral triangle - all sides are equal (60\(^o\))
Isosceles triangle - a triangle that has 2 equal sides
Right triangle - a triangle with a 90\(^o\) angle
Scalene triangle - a triangle with no equal sides

Okay so, lets look at \(\triangle\)ABO, it contains a 60\(^o\) angle, meaning that it's an equilateral triangle, and it's also under 90, so an acute triangle, it also contains \(3\) equal sides, so we can call it an isosceles triangle too.

Acute, Equilateral, Isosceles, Right, Scalene.

Now, let's look at \(\triangle\)CDO, it contains a 90\(^o\) angle, making it a right triangle, it also contains 2 equal sides, an isosceles triangle.

So from this, we'd be left with \(Scalene\).

Answer 6

I thought that scalene was a triangle that had no equal sides. It looks like that triangle has 2 equal sides.. :(

Answer 7

Your question states "Which of the following does NOT appear in the figure?", which means you look for the one that's not included.

Answer 8

Okay! I read that wrong then! Thank you @extrinix

Answer 9

No problem!