KS2 Primary Maths Age 9-13 - Reflection: - Explained

The video tutorial guides students through the process of reflecting a triangle across a diagonal mirror line. It explains how to determine the position of each vertex after reflection by measuring the distance to the mirror line and replicating it on the opposite side. The tutorial emphasizes the importance of shading the reflected triangle for clarity and outlines the marking criteria for the task, which includes correct orientation and accuracy.

What is the initial task described in the video?

• Reflecting a triangle across a diagonal mirror line

• Drawing a triangle

• Finding the perimeter of a triangle

• Calculating the area of a triangle

How is the position of the first vertex determined in the reflection process?

• By moving it horizontally

• By moving it vertically

• By moving it diagonally across the mirror line

• By rotating it 90 degrees

What is the next step after marking the vertices of the reflected triangle?

• Coloring the original triangle

• Erasing the original triangle

• Joining the vertices to form the triangle

• Calculating the area

What tool is recommended for shading the reflected triangle?

• A crayon

• A pen

• A marker

• A pencil

How many marks are awarded for a fully correct reflection?

• Three marks

• Two marks

• One mark

• Four marks