MA19.4.28

Mathematics (2019) Grade(s): 4

MA19.4.28
Identify two-dimensional figures based on the presence or absence of parallel or perpendicular lines or the presence or absence of angles of a specified size.

Unpacked Content

Knowledge

Students know:

Two lines are parallel if they never intersect and are an equal distance apart.
Two lines are perpendicular if they are at right angles to each other.
A right triangle is a triangle that has one right angle.

Skills

Students are able to:

Classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines.
Classify two-dimensional figures based on the presence or absence of angles of a specified size.
Identify right triangles.

Understanding

Students understand that:

shapes are categorized based on attributes they possess in common such as angle size, side length, side relationships (parallel and perpendicular).

Vocabulary

Two-dimensional figure
Parallel lines
Perpendicular lines
Angle
Right triangle

Aligned Learning Resources

Classify Triangles StudyJam

Adding Crayons | Rise and Shine: Math Time

Anne of Green Gables: The Great American Read

Applying the Pythagorean Theorem

Approximating Square Roots of Nonperfect Squares

Geometric Figures Goose Chase

Quadrilateral Quest

Camp Quadrilaterals

Interactive Quadrilaterals

Design by Adaptive Theme