JHS2 Mathematics · Term 2, Week 11

Shapes and Space

Full lesson notes coming

Notes for this lesson are being prepared. The curriculum details below are complete and ready to use for your planning.

Curriculum details

Strand
Geometry and Measurement (Strand 3)
Sub-strand
Shapes and Space (3.1)
Content standard
B8.3.1.1 - Demonstrate understanding and use of the relationship between parallel lines and alternate and corresponding angles and use the sum of angles in a triangle to deduce the angle sum in any polygon.
Indicator
B8.3.1.1.2 - Determine the values of angles in a triangle using knowledge of the sum of interior angles in a triangle and other properties.
Suggested placement
Term 2, Week 11 (Week 23 of the year)

Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.

Curriculum reference
Mathematics, Common Core Programme (JHS1-JHS3), 2023, p. 124

Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

E.g. 1 Calculate the values of y and the angles in the triangle
Figure from the jhs2 mathematics curriculum, printed page 124
E.g. 2 Deduce the formula for the sum of interior angles in a polygon and determine the value of an angle in a regular hexagon.
E.g. 3 Use the formula for finding the sum of interior angles in a polygon (n- 2)180 to determine the value of x in the hexagon.
Figure from the jhs2 mathematics curriculum, printed page 124