Mrs. Kim's Isosceles and Equilateral Triangles

Front

What is an isosceles triangle?

Back

An isosceles triangle is a triangle that has at least two sides of equal length.

Front

What is an equilateral triangle?

Back

An equilateral triangle is a triangle in which all three sides are of equal length and all three angles are equal to 60 degrees.

Front

What does 'acute triangle' mean?

Back

An acute triangle is a triangle where all three angles are less than 90 degrees.

Front

What is the sum of the interior angles of a triangle?

Back

The sum of the interior angles of a triangle is always 180 degrees.

Front

How do you find the value of an unknown angle in a triangle?

Back

To find the value of an unknown angle in a triangle, subtract the sum of the known angles from 180 degrees.

Front

What is the definition of equiangular triangle?

Back

An equiangular triangle is a triangle in which all three angles are equal.

Front

If two angles of a triangle are equal, what can be said about the sides opposite those angles?

Back

If two angles of a triangle are equal, the sides opposite those angles are also equal in length.

Front

What is the relationship between the sides and angles in an equilateral triangle?

Back

In an equilateral triangle, all sides are equal, and all angles are equal to 60 degrees.

Front

How do you classify a triangle with one angle greater than 90 degrees?

Back

A triangle with one angle greater than 90 degrees is classified as an obtuse triangle.

Front

What is the formula for the area of a triangle?

Back

The area of a triangle can be calculated using the formula: Area = 1/2 * base * height.