Select all the ways you can describe the given polygon.
regular
irregular
scalene
isosceles
equilateral
acute
right
obtuse
equiangular

>regular triangle, we call equilateral triangles regular polygons.

>isosceles,  as an equilaterial triangle is a specific type of isosceles due to       more than one side being of equal length and angle.

>equilateral,  where all sides and angles are the same.

>acute,    as all 3 angles are less than 90

>equiangular.   equilateral triangles are also described as equiangular.

Step-by-step explanation:

Just the five ways above can describe the polygon shown, as the angles of a scalene triangle are unequal. as are their sides, equilaterial have same sides and angles. Obtuse have angles larger than 90deg less than 180 deg.

Whilst irregular are triangles and shapes that have uneven sides and are not right or isosceles.

Right triangles have one angle that is exactly 90 deg.

tangent

step-by-step explanation: