Question

answer
isosceles obtuse isosceles acute
equilateral scalene obtuse
scalene acute scalene right
isosceles right

Explanation:

Step1: Check for equal sides

In triangle \(MNO\), \(OM = ON=6.5\). So, it is an isosceles triangle (a triangle with at least two equal - sided is isosceles).

Step2: Check for angle types

All angles of the triangle: \(\angle M = 54^{\circ}\), \(\angle N=54^{\circ}\), \(\angle O = 72^{\circ}\). Since \(54^{\circ}<90^{\circ}\) and \(72^{\circ}<90^{\circ}\), all angles are acute.

Answer:

Isosceles Acute