4.6D Classifying 2D Figures

Front

What is a rectangle?

Back

A rectangle is a 2D shape with four sides, where opposite sides are equal in length and all four angles are right angles (90 degrees).

Tags

CCSS.1.G.A.1

CCSS.2.G.A.1

Front

What defines a right angle?

Back

A right angle is an angle that measures exactly 90 degrees.

Tags

CCSS.4.G.A.1

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet or intersect, no matter how far they are extended.

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Front

What are perpendicular lines?

Back

Perpendicular lines are lines that intersect at a right angle (90 degrees).

Tags

CCSS.4.G.A.1

CCSS.HSG.CO.A.1

Front

What is an obtuse angle?

Back

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

Tags

CCSS.4.G.A.1

Front

What is an acute angle?

Back

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

Tags

CCSS.4.G.A.1

Front

How can you identify a polygon?

Back

A polygon is a closed 2D shape with straight sides. Examples include triangles, rectangles, and pentagons.

Front

What is a triangle?

Back

A triangle is a polygon with three sides and three angles.

Tags

CCSS.2.G.A.1

Front

What is a square?

Back

A square is a special type of rectangle where all four sides are equal in length and all angles are right angles.

Tags

CCSS.5.G.B.4

Front

What is a right triangle?

Back

A right triangle is a triangle that has one right angle (90 degrees).

Tags

CCSS.4.G.A.2