4.2 To recognise and describe angles

Mathematics

Geometry

Volume

Educator section

Memorandum

1.

1.1 52º

1.2 130º

1.3 90º

1.4 28º

2.

2.1 Acute

2.2 Acute

2.3 Acute

2.4 Obtuse

Leaner section

Content

Activity: to recognise and describe angles [lo 3.2.3, lo 4.11]

1. Use your protractor to measure the following angles. Then explain what type of angle each one is.

1.1

1.2

1.3

2. Complete the table. First estimate the sizes of the angles and then measure them accurately.

	Angle	Estimated	Measured	Type of angle
2.1		_________	_________	_________
2.2		_________	_________	_________
2.3		_________	_________	_________
3.2.4		_________	_________	_________

Assessment

Learning Outcome 3: The learner will be able to use appropriate measuring units, instruments and formulae in a variety of contexts.

Assessment Standard 3.2: We know this when the learner describes and classifies two-dimensional shapes and three-dimensional objects in terms of properties including:

3.2.3: angle size of corners;

Learning Outcome 4: The learner will be able to use appropriate measuring units, instruments and formulae in a variety of contexts.

Assessment Standard 4.11: We know this when the learner angles smaller than right angles.