Classifying Quadrilaterals and Triangles

Front

What is a scalene obtuse triangle?

Back

A triangle with one angle greater than 90 degrees and no sides of equal length.

Front

What do shapes B and D have in common?

Back

They each have 3 sides and at least 1 right angle.

Front

What is a parallelogram?

Back

A quadrilateral with two pairs of parallel sides.

Front

What do shapes C and D have in common?

Back

They each have 4 sides and exactly 1 pair of parallel sides.

Front

What are isosceles triangles?

Back

Triangles that have at least two sides of equal length.

Front

What is the definition of a triangle?

Back

A polygon with three edges and three vertices.

Front

What is the definition of a quadrilateral?

Back

A polygon with four edges and four vertices.

Front

What is an equilateral triangle?

Back

A triangle where all three sides are of equal length.

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.