Geometry 4th Grade

Front

What is a triangle?

Back

A triangle is a three-sided polygon.

Front

What are the types of triangles based on side lengths?

Back

There are three types: Equilateral (all sides equal), Isosceles (two sides equal), and Scalene (no sides equal).

Front

What is a right triangle?

Back

A right triangle has one angle that measures 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 an acute angle?

Back

An acute angle is an angle that measures less than 90 degrees.

Front

What is the sum of angles in a triangle?

Back

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

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle with all sides of different lengths.

Front

What is an isosceles triangle?

Back

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

Front

What is a polygon?

Back

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

Front

What is a quadrilateral?

Back

A quadrilateral is a polygon with four sides.