Similarity and Proportions Vocabulary

Similarity and ​Proportions Vocabulary

By Ms. Candice

Learning objective

By the end of this lesson, you should be able to:

• use the vocabulary related to similarity and proportions to identify shapes, angles and lines.

Poll

Complete the following sentence:

These triangles are similar because...

• they are the same size and their angles are the same color.

• their sides are congruent and their angles have the same names.

• their corresponding angles are congruent and their corresponding sides are in proportion.

Multiple Choice

What is the meaning of the following word:

Similar

• almost the same

• the same

• different

Multiple Choice

What is the meaning of the following word:

Polygon

• A polygon is a 3D closed shape with straight sides. eg. cubes, cylinders, spheres ...

• A polygon is an open shape with no sides. eg. rectangles, triangles, hexagons, octagons ...

• A polygon is a closed 2D shape with straight sides. eg. rectangles, triangles, hexagons, octagons ...

Draw

Draw a polygon.

Multiple Choice

What is the meaning of the following:

Corresponding angles/ sides

• 2 angles or sides that have parallel lines

• 2 angles or sides that are different in two different shapes

• 2 angles or sides that are the same in two different shapes

Draw

Draw corresponding angles.

Multiple Choice

What is the meaning of the following word:

Congruent

• having parallel lines

• the same shapes or forms

• different shapes of forms

Draw

Draw

Multiple Choice

What is the meaning of the following word:

proportional

• having parts that are related or appropriate to each other

• two angles or sides that are in different places in two different shapes

• having parts that are not related or appropriate to each other

Multiple Choice

What is the meaning of the following word:

perpendicular

• a straight line at an angle of 0° to a given line, plane, or surface.

• two angles or sides that are in different places in two different shapes

• a straight line at an angle of 90° to a given line, plane, or surface.

Draw

Draw

Multiple Choice

What is the meaning of the following:

parallel lines

• lines that are long and different

• lines that go in the same direction and never cross

• lines that go in different directions and cross each other

Draw

Draw

Let's review what we learned today...

Multiple Choice

What is the meaning of the following word:

Congruent

• having parallel lines

• the same shapes or forms

• different shapes of forms

Multiple Choice

What is the meaning of the following word:

perpendicular

• a straight line at an angle of 0° to a given line, plane, or surface.

• two angles or sides that are in different places in two different shapes

• a straight line at an angle of 90° to a given line, plane, or surface.

Multiple Choice

What is the meaning of the following:

parallel lines

• lines that are long and different

• lines that go in the same direction and never cross

• lines that go in different directions and cross each other

Multiple Choice

What is the meaning of the following word:

proportional

• having parts that are related or appropriate to each other

• two angles or sides that are in different places in two different shapes

• having parts that are not related or appropriate to each other

Multiple Choice

What is the meaning of the following word:

Similar

• almost the same

• the same

• different

Multiple Choice

What is the meaning of the following:

Corresponding angles/ sides

• 2 angles or sides that have parallel lines

• 2 angles or sides that are different in two different shapes

• 2 angles or sides that are the same in two different shapes

Multiple Choice

What is the meaning of the following word:

Polygon

• A polygon is a 3D closed shape with straight sides. eg. cubes, cylinders, spheres ...

• A polygon is an open shape with no sides. eg. rectangles, triangles, hexagons, octagons ...

• A polygon is a closed 2D shape with straight sides. eg. rectangles, triangles, hexagons, octagons ...

Poll

Self Assess

Can you use the new vocabulary related to similarity and proportions to identify shapes, angles and lines?