Week of April 7 - 11

Front

Triangle

Back

A closed two-dimensional shape with three straight sides and three angles.

Front

Vertex

Back

The point where two sides of a triangle meet.

Front

Angle

Back

The space between two sides of a triangle where they meet.

Front

Acute Triangle

Back

A triangle with all angles less than 90 degrees.

Front

Obtuse Triangle

Back

A triangle with one angle greater than 90 degrees.

Front

Right Triangle

Back

A triangle with one right angle.

Front

Equilateral Triangle

Back

A triangle with all three sides of equal length.

Front

Isosceles Triangle

Back

A triangle with at least two sides of equal length.

Front

Scalene Triangle

Back

A triangle with all three sides of different lengths.

Front

Quadrilateral

Back

A closed shape with four straight sides.