Symmetry and Shapes 2

Symmetry and Shapes 2

​Lesson Objectives

• identify congruent shapes​

​• identify and describe 3D shapes

• draw front, side, and top views of 3D shapes

​8.3 Recognising Congruent Shapes

Multiple Choice

These two triangles are congruent.

Which angle in triangle DEF corresponds to angle B?

• $$\angle D$$  

• $$\angle E$$  

• $$\angle F$$  

Multiple Choice

When describing congruent shapes, the order of the letters shows matching angles.

ΔTUV is congruent to:

• $$\Delta WYX$$  

• $$\Delta WXY$$  

• $$\Delta YWX$$  

• $$\Delta XYW$$  

Multiple Choice

Which side corresponds to AF in triangle CDE?

• CD

• CE

• ED

Multiple Choice

The two pentagons are congruent.

A pair of corresponding sides is:

• AB and GH

• AB and FG

• DE and HI

• DE

Multiple Choice

The two triangles are congruent.

DF = ...

• 15

• 8

• $$30^0$$  

• 9

​8.4 3D Shapes

​8.4 3D Shapes

​Properties:

​8.4 3D Shapes

​visualization

​Example

Multiple Choice

How many edges does this prism have?

• 4

• 6

• 8

• 12

Multiple Choice

How many faces does this pyramid have?

• 5

• 6

• 7

• 8

Multiple Choice

Which view of the 3D shape is shown by the direction of arrow A?

• Plan

• Front elevation

• Side elevation

• Bottom elevation

Multiple Choice

Which of these diagrams shows the front elevation of this shape as shown by arrow B?

Multiple Choice

Which of these diagrams shows the plan (arrow A) of this shape?  

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