11.1 and 11.2 Polygons and Triangles

Front

What is a polygon?

Back

A polygon is a closed figure made up of straight line segments. The segments are called sides, and the points where the sides meet are called vertices.

Front

What is a regular polygon?

Back

A regular polygon is a polygon where all sides are of equal length and all angles are equal.

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 side lengths?

Back

1. Equilateral: all sides are equal. 2. Isosceles: two sides are equal. 3. Scalene: all sides are different.

Front

What are the types of triangles based on angles?

Back

1. Acute: all angles are less than 90 degrees. 2. Right: one angle is exactly 90 degrees. 3. Obtuse: one angle is greater than 90 degrees.

Front

What is an obtuse angle?

Back

An obtuse angle is an angle that measures more than 90 degrees but less than 180 degrees.

Front

What is a hexagon?

Back

A hexagon is a polygon with six sides and six angles.

Front

What is a pentagon?

Back

A pentagon is a polygon with five sides and five angles.

Front

How do you classify a triangle with one obtuse angle?

Back

It is classified as an obtuse triangle.

Front

What is the difference between a regular and irregular polygon?

Back

A regular polygon has all sides and angles equal, while an irregular polygon does not.