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5

Geometry

LEARNING ObjEctIvEs

After studying this chapter, students will be able to...
y recall simple geometrical concepts

y learn about turns as angles
y identify the arms and the vertex of an angle
y recognise different types of angles
y measure and draw angles using a protractor

y learn about triangles, quadrilaterals and polygons
y understand and create shapes using tangrams
y learn and use basic terms related to a circle
y identify different types of polyhedra and their faces, vertices, edges and nets

21 st
Century #Inter-disciplinary
Skills
Warm Up The Phases of the Moon

The phases of the moon refer to the different appearances of the Moon as seen
from Earth, resulting from its orbit around our planet. There are eight distinct
phases: new moon, waxing crescent, first quarter, waxing gibbous, full moon,
waning gibbous, third (last) quarter, and waning crescent. This cycle, known as
1
the lunar month, takes approximately 29 days to complete. It occurs because
2
the amount of the moon's sunlit surface visible from Earth changes as the moon
revolves around the Earth.

105
Geometry