Green Bridge Learning Resource Nchekwa Maka Symmetry

Gbogbo ọrọ náà

Symmetry is one of the most visual ideas in mathematics. Butterflies, snowflakes and company logos all use symmetry to create balance, and recognising the type and degree of symmetry in a shape is a key geometry skill.

This topic covers two kinds of symmetry: line symmetry (reflective) and rotational symmetry. You will learn to identify both in common 2D shapes and apply this knowledge to exam questions.

Ayẹwo Ẹkọ

Ekele diri gi maka imecha ihe karịrị na Symmetry. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.

Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.

Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.

How many lines of symmetry does a square have? A) 1 B) 2 C) 4 D) 8 Answer: C
What is the order of rotational symmetry of an equilateral triangle? A) 1 B) 2 C) 3 D) 6 Answer: C
Which shape has no lines of symmetry but has rotational symmetry of order 2? A) Rectangle B) Parallelogram C) Kite D) Trapezium Answer: B
A regular polygon has 10 lines of symmetry. How many sides does it have? A) 5 B) 8 C) 10 D) 20 Answer: C
How many lines of symmetry does a scalene triangle have? A) 0 B) 1 C) 2 D) 3 Answer: A