A triangle whose all angles are less than $90°$ is called

Classify the following triangle as scalene, isosceles, or equilateral.

Classify the following triangle as scalene, isosceles, or equilateral.

Classify the following as an acute, obtuse, or right triangle.

Classify the following as an acute, obtuse, or right triangle.

Define the following:

A scalene triangle

Classify the following as an acute, obtuse, or right triangle.

Name the types of following triangles:

Triangle with lengths of sides $7 \mathrm{c}\mathrm{m}, 8 \mathrm{c}\mathrm{m}$ and $9 \mathrm{c}\mathrm{m}$

Classify the following triangle as scalene, isosceles, or equilateral.

Classify the triangle with the following measures of sides as scalene, isosceles, or equilateral.

$4 \mathrm{cm}, 2 \mathrm{cm}, 4 \mathrm{cm}$

Classify the following as an acute triangle, obtuse triangle, or right triangle.