Angles in 2-D shapes

Subject: Mathematics

Grade: Upper Primary

Publisher: YDP

Resource types: Whiteboard presentation

Resource ID: j1391
Description:

At the end of this activity, students should be able to:
– know precise definitions of acute, right, obtuse and reflex angles
– estimate measures of given angles
– construct an exact copy of a given angle
– check, using a compass, whether two angles are equal.

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Angles in 2-D shapes Class activity

Consists of...
Flying angles Animation Various angles Whiteboard exercise Acute angles Whiteboard exercise Obtuse angles Whiteboard exercise Reflex angles Animation Reflex angles – a... Whiteboard exercise The angles that are... Animation Construction Whiteboard exercise The angles that are... Animation Making angles that ... Whiteboard exercise Comparing angles Animation Are two angles equal? Whiteboard exercise Angles of quadrilat... Animation The missing angle o... Whiteboard exercise Angles of polygons Animation Angles of pentagon Whiteboard exercise

Relevant to...

Primary School

Upper Primary (Grades 4-6)

Mathematics

Space, shape and measures (1)

26. Angles in 2-D shapes

YDP SA

Keywords

reflex, acute, angle, plane, dimension, shapes, angles, obtuse, 2-d, Angles in 2-D shapes

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