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Investigate angles on a straight line and angles at a point

• Recognise right angles, angles on a straight line and angles at a point embedded in diagrams.

• Identify the vertex and arms of angles formed by intersecting lines.

Investigate the relationships formed by the intersection of straight lines

• Identify angle types formed by the intersection of straight lines, including right angles (90°), angles on a straight line (add to 180°) and angles at a point that form an angle of revolution (add to 360°).

• Recognise that perpendicular lines intersect at right angles (90°).

• Investigate adjacent angles that form a right angle and establish that they add to 90°.

• Investigate adjacent angles on a straight line and establish that they add to 180°.

• Investigate angles at a point and establish that they form an angle of revolution and add to 360°.