4.G.2 Classifying 2D Shapes

Front

What is a triangle?

Back

A triangle is a 2D shape with three sides and three angles.

Front

What are the types of triangles based on angles?

Back

1. Acute Triangle: All angles are less than 90 degrees. 2. Right Triangle: One angle is exactly 90 degrees. 3. Obtuse Triangle: One angle is greater than 90 degrees.

Front

What are the types of triangles based on side lengths?

Back

1. Equilateral Triangle: All sides are equal. 2. Isosceles Triangle: Two sides are equal. 3. Scalene Triangle: All sides are different.

Front

What is a right triangle?

Back

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

Front

What is an equilateral triangle?

Back

An equilateral triangle is a triangle where all three sides are of equal length and all angles are equal to 60 degrees.

Front

What is a scalene triangle?

Back

A scalene triangle is a triangle where all three sides are of different lengths.

Front

What is a parallelogram?

Back

A parallelogram is a 2D shape with opposite sides that are equal and parallel.

Front

What is a rhombus?

Back

A rhombus is a type of parallelogram where all four sides are of equal length.

Front

What is a trapezoid?

Back

A trapezoid is a 2D shape with at least one pair of parallel sides.

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet and are always the same distance apart.