Glossary
Included Angle
The included angle is the angle formed between two named sides of a triangle, lying directly at the vertex where they meet. It is required for the cosine rule and for the area formula .
Identifying it correctly is essential before applying either formula.
Meaning
The included angle is the angle formed between two named sides of a triangle, lying directly at the vertex where they meet. It is required for the cosine rule and for the area formula .
Identifying it correctly is essential before applying either formula.
Where it appears in Add Math
You meet Included Angle in the Solution of Triangles chapter of SPM Additional Mathematics. Knowing the term precisely matters in the exam: questions often hinge on reading a keyword correctly, and because SPM marking is analytic, using the right definition in your working helps secure method marks.
Our teachers make sure a student can not only recite what Included Angle means but use it fluently in a full solution.
The term in three languages
Because the SPM Add Math paper is bilingual (BM/EN), it helps to know this term in each language: Included Angle (EN) · Sudut Kandung (BM) · 夹角 (中文)
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