In isosceles triangle \(MNO\), the length of \(MN\) is \(5\). What is the perimeter of the triangle?

[AAPL]

Princeton Review

In isosceles triangle \(MNO\), the length of \(MN\) is \(5\). What is the perimeter of the triangle?

1) The length of \(MO\) is \(11\).
2) \(NO\) is longer than \(MN\).

OA A

[swerve]

Princeton Review

In isosceles triangle \(MNO\), the length of \(MN\) is \(5\). What is the perimeter of the triangle?

1) The length of \(MO\) is \(11\).
2) \(NO\) is longer than \(MN\).

OA A

From 1
We know the length of two sides of the triangle and given that it is an isosceles triangle we can obtain the length of the third side since an isosceles triangle has 2 equal sides. Sufficient \(\Large{\color{green}{\checkmark}}\)

From 2
Other side value is not given. Not sufficient \(\Large{\color{red}\chi}\)

Therefore, A