Question

25 classify the triangle by its sides and by measuring its angles.
this triangle can be classified by its angles as
and by its sides as
21 acute
22 right
23 equilateral
24 obtuse
25 equiangular
26 isosceles
27 acute

Explanation:

Triangles can be classified by angles: acute (all angles < 90°), right (one angle = 90°), obtuse (one angle > 90°). By sides: scalene (no equal sides), isosceles (two equal sides), equilateral (three equal sides). In the given triangle, assume no right or obtuse angle shown (visually), so could be acute. And if two sides are equal (common in such basic figures without markings, assume isosceles as a default classification when no side - length info but two sides look equal in basic drawing).

Answer:

By angles: acute; By sides: isosceles.