Answer:
By the angles and sides, but if you need more help here is a link to a video that could be pretty helpful.
Step-by-step explanation:
https://www.khanacademy.org/math/cc-fourth-grade-math/plane-figures/imp-classifying-triangles/v/scalene-isosceles-equilateral-acute-right-obtuse#:~:text=Learn%20to%20categorize%20triangles%20as,acute%2C%20right%2C%20or%20obtuse.
Answer:
for equilateral triangle
1.each angle of an equilateral triangle is 60 degree
2.all the sides of equilateral triangle are equal
for isosceles triangle
1.any two sides of isosceles triangle are equal
2.base angles of an isosceles triangle is equal.
for scalene triangle
1.all the sides of scalene triangle are different.
Step-by-step explanation:
Hope this helps u!!