Question

Which option shows the triangles correctly classified by their sides and by their angle measures?
@Mathematics

Answer 1

a-by side: 2 and 4 are scalene triangles because each has two sides of the same length.
by angle: All are acute triangles because each has no angle that measures 90˚.
b-by side: 2 and 4 are isosceles triangles because each has two sides of the same length.
by angle: 1, 2, and 3 are acute triangles because each has all three angles that measure less than 90˚.
c- by side: 3 is a scalene triangle because all the sides are of different lengths.
by angle: a-by side: 2 and 4 are scalene triangles because each has two sides of the same length.
by angle: All are acute triangles because each has no angle that measures 90˚.
b-by side: 2 and 4 are isosceles triangles because each has two sides of the same length.
by angle: 1, 2, and 3 are acute triangles because each has all three angles that measure less than 90˚.
c- by side: 3 is a scalene triangle because all the sides are of different lengths.
by angle: 1, 2, and 3 are obtuse triangles because they have at least one angle that measures less than 90˚.
d-by side: 3 is a scalene triangle because all the sides are of the same length.
by angle: 1, 2, and 4 are acute triangles because each has all three angles that measure less than 90˚.