# TranStar

## Transformações no plano

Reflect, rotate and enlarge the TranStar to journey through the perilous voids of space in search of a new home.

• ### Rotação

Rotate a shape with and without a centre of rotation. If the centre is given, then it will be at the centre of the shape or on one of its vertices. Use 90, 180, 270 degrees. Tracing paper is always permissible. Describe a rotation including finding the centre of rotation by trial and improvement. Understand that the image preserves length and angles. Do not use a coordinate grid, but only square paper.

• ### Rotação em torno de um ponto qualquer

Use a square grid to rotate a shape with any centre of rotation. Use 90, 180, 270 degrees. Tracing paper is always permissible. Describe a rotation including finding the centre of rotation by trial and improvement. Understand that the image preserves length and angles, i.e. congruent.

• ### Reflexão - eixo de simetria horizontal ou vertical

Reflect a shape vertically and horizontally on a square grid with a given mirror line. Describe a reflection, including saying where the mirror line is. Understand that the image preserves lengths and angles. The equation of the mirror line is not used.

• ### Reflexão - equações do eixos de simetria

Reflect a shape on a coordinate axes given only the equation of the mirror line, use only equations of the form y = a, x = a, y = x + a, y = -x + a, x + y = a. Describe a reflection including stating the equation of the mirror line. Understand that the image preserves lengths and angles, i.e. congruent.

• ### Ampliação em um malha

Use a square grid to enlarge with or without a centre of enlargement. Use positive integer scale factors. Understand that lengths and perimeter are increased by the scale factor and angles are preserved. Describe an enlargement. Spot, from a set of possible shapes, which ones are enlargements of the original by consideration of the side lengths.

• ### Ampliação em eixos coordenados

Use the coordinate axes to enlarge with or without a centre of enlargement. Use positive integer scale factors. Describe an enlargement. Understand that area is not preserved.

## Como ensinar Geometria usando a Mangahigh

Gostaria de ter planos de aula com as nossas atividades?