Classify Triangles

Front

What is a triangle?

Back

A triangle is a polygon with three edges and three vertices.

Front

What are the three types of triangles based on angle measures?

Back

The three types of triangles based on angle measures are acute (all angles less than 90 degrees), right (one angle equal to 90 degrees), and obtuse (one angle greater than 90 degrees).

Front

What is an acute triangle?

Back

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

Front

What is a right triangle?

Back

A right triangle is a triangle that has one angle measuring exactly 90 degrees.

Front

What is an obtuse triangle?

Back

An obtuse triangle is a triangle that has one angle measuring greater than 90 degrees.

Front

How do you classify a triangle based on the lengths of its sides?

Back

Triangles can be classified as equilateral (all sides equal), isosceles (two sides equal), or scalene (all sides different).

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

If one angle of a triangle is 90 degrees, what type of triangle is it?

Back

If one angle of a triangle is 90 degrees, it is classified as a right triangle.

Front

What is a polygon?

Back

A polygon is a closed figure with three or more straight sides.

Front

Can a triangle be both obtuse and isosceles?

Back

Yes, a triangle can be both obtuse and isosceles if it has one obtuse angle and two equal sides.