Classify & Triangle sum

Front

What is an isosceles triangle?

Back

A triangle with at least two sides of equal length.

Front

What is an acute triangle?

Back

A triangle where all three angles are less than 90 degrees.

Front

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

Back

180 degrees.

Front

How do you classify triangles based on their sides?

Back

Triangles can be classified as scalene (no equal sides), isosceles (two equal sides), or equilateral (three equal sides).

Front

How do you classify triangles based on their angles?

Back

Triangles can be classified as acute (all angles < 90°), right (one angle = 90°), or obtuse (one angle > 90°).

Front

What is a scalene triangle?

Back

A triangle with all sides of different lengths.

Front

What is an equilateral triangle?

Back

A triangle with all three sides of equal length.

Front

What is a right triangle?

Back

A triangle that has one angle measuring exactly 90 degrees.

Front

What is the measure of each angle in an equilateral triangle?

Back

Each angle measures 60 degrees.

Front

If one angle of a triangle is 95 degrees, what can you say about the other two angles?

Back

They must be acute, as the sum of all angles in a triangle is 180 degrees.