Polygons and Triangles

Front

What is a polygon?

Back

A polygon is a closed figure made up of straight line segments. Examples include triangles, quadrilaterals, pentagons, and hexagons.

Front

What is a triangle?

Back

A triangle is a polygon with three sides and three angles.

Front

What are the types of triangles based on angles?

Back

1. Acute triangle: All angles are less than 90 degrees. 2. Right triangle: One angle is exactly 90 degrees. 3. Obtuse triangle: One angle is greater than 90 degrees.

Front

What are the types of triangles based on sides?

Back

1. Equilateral triangle: All sides are equal. 2. Isosceles triangle: Two sides are equal. 3. Scalene triangle: All sides are different.

Front

What is a regular polygon?

Back

A regular polygon is a polygon with all sides and angles equal. Examples include a regular triangle (equilateral) and a regular square.

Front

What is an irregular polygon?

Back

An irregular polygon is a polygon that does not have all sides and angles equal. Examples include a rectangle and a scalene triangle.

Front

How many sides does a pentagon have?

Back

A pentagon has five sides.

Front

How many sides does a hexagon have?

Back

A hexagon has six sides.

Front

How many sides does an octagon have?

Back

An octagon has eight sides.

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.