Triangle and Quadrilaterals

Front

What is an isosceles triangle?

Back

A triangle with at least two sides of equal length.

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 polygon?

Back

Polygons are 2-dimensional shapes made of straight lines, and the shape is 'closed' (all the lines connect up).

Front

What is an acute triangle?

Back

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

Front

What is a right triangle?

Back

A triangle that has one angle equal to 90 degrees.

Front

What is an obtuse triangle?

Back

A triangle that has one angle greater than 90 degrees.

Front

What is a quadrilateral?

Back

A polygon with four sides.

Front

What is a square?

Back

A quadrilateral with all sides equal and all angles equal to 90 degrees.

Front

What is a Venn diagram?

Back

A diagram that shows all possible logical relations between a finite collection of different sets.