Question

scalene equilateral acute o o o o obtuse o o o o right o o o o

Explanation:

Step1: Recall triangle - type definitions

Scalene triangle has all sides of different lengths. Equilateral triangle has all sides equal. Acute - angled triangle has all angles less than 90°. Obtuse - angled triangle has one angle greater than 90°. Right - angled triangle has one angle equal to 90°.

Step2: Analyze side lengths

By counting the grid units, we can see that the side lengths of the triangle are different. The base is 8 units (from - 4 to 4 on the x - axis), and the other two non - base sides have different lengths as well. So it is a scalene triangle.

Step3: Analyze angles

We can observe that one of the angles of the triangle is greater than 90°. So it is an obtuse - angled triangle.

Answer:

Scalene, Obtuse