  # Recall 2D Geometry Notation and Terms

In this worksheet, students will learn to recognise and apply geometric terms and notations to solve problems involving 2D shapes. Key stage:  KS 4

GCSE Subjects:   Maths

GCSE Boards:   AQA, Eduqas, Pearson Edexcel, OCR,

Curriculum topic:   Geometry and Measures, Basic Geometry

Curriculum subtopic:   Properties and Constructions Conventions, Notations and Terms

Difficulty level:   #### Worksheet Overview

The ability to recognise two-dimensional shapes is a useful skill to have, as this information can help us to solve problems in higher levels of maths.

Notation of lines To show that there are lines of the same length we indicate this with a single perpendicular dash in the middle of the line. If there are more than one set of lines of equal length then additional dashes are used.

Perpendicular means 'at right angles to'.

Notation of shapes

We label shapes with letters at each corner, this allows us to give the shape a name.

For example: We call this triangle 'ABC'. We call this pentagon 'DEFGH'.

Notation of angles

We use the following symbol to mean angle: ∠ We describe the angle above as ∠ EFG or ∠ GFE. Right angles, like the one above, are shown with a square in the corner.

When we want to show that specific angles are the same, we use more than one arch: Notation of parallel lines Parallel lines never meet. They are shown with an arrow across the middle of the line. If there are more than one set of parallel lines then additional arrows are used.

Now, it's over to you to put this information into practice!

In this activity, we will identify and apply geometric terms and notations to help us solve problems involving 2D shapes.

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