How to determine all of the measure of angles for an equilateral triangle

The video tutorial explains the properties of equilateral, isosceles, and equiangular triangles. It highlights that in an equilateral triangle, all sides are equal, and in an equiangular triangle, all angles are equal, each measuring 60 degrees. The tutorial also covers the relationship between equal sides and angles in isosceles triangles.

What is the defining characteristic of an equilateral triangle?

• It has one right angle

• All angles are 90 degrees

• All sides are of different lengths

• All sides are equal in length

In an isosceles triangle, what can be said about the angles opposite the equal sides?

• They are always 90 degrees

• They are equal in measure

• They are different in measure

• They are always 45 degrees

What is an equiangular triangle?

• A triangle with all sides equal

• A triangle with all angles equal

• A triangle with two equal sides

• A triangle with one right angle

If one angle of an equilateral triangle is 60 degrees, what are the measures of the other angles?

• 45 degrees each

• 90 degrees each

• 60 degrees each

• 120 degrees each

What is the relationship between equilateral and equiangular triangles?

• Equilateral triangles are always equiangular

• Equilateral triangles have two equal angles

• Equilateral triangles have one angle of 90 degrees

• Equilateral triangles are never equiangular