Classifying Shapes and Triangles

This lesson is the second in Unit 16 for fifth-grade geometry, focusing on classifying shapes. It reviews lines, line segments, and angles, and introduces basic shapes and their attributes. The lesson covers different types of triangles, including right, obtuse, and acute triangles, and explains the properties of rectangles, squares, rhombuses, parallelograms, trapezoids, and kites. Each shape is described by its angles, sides, and other defining characteristics.

What is the primary focus of the lesson on classifying shapes?

• Classifying shapes based on their attributes

• Understanding the concept of symmetry

• Learning about fractions

• Identifying different types of lines

Which type of triangle has one angle that is exactly 90 degrees?

• Acute triangle

• Obtuse triangle

• Right triangle

• Equilateral triangle

How many obtuse angles does an obtuse triangle have?

• None

• Three

• One

• Two

What is a characteristic of an acute triangle?

• It has one obtuse angle

• All angles are less than 90 degrees

• All sides are equal

• It has one right angle

What do rectangles and squares have in common?

• They both have no parallel sides

• They both have four right angles

• They both have unequal sides

• They both have obtuse angles

Which shape has four equal sides and opposite angles that are equal?

• Square

• Rectangle

• Trapezoid

• Rhombus

What is a defining feature of a parallelogram?

• It has two pairs of parallel sides

• It has four right angles

• It has one pair of parallel sides

• It has no parallel sides

How many pairs of parallel sides does a trapezoid have?

• Three

• One

• Two

• None

What is unique about the sides of a kite?

• All sides are equal

• It has no equal sides

• It has two pairs of adjacent sides that are equal

• All sides are parallel

Which shape has one pair of equivalent opposite angles?

• Kite

• Square

• Rectangle

• Parallelogram