Question
In the diagram, AB = AC and BN = NC.
Complete the statement using a mathematical term.
Triangle ABN is ……………………………….. to triangle ACN.
Answer/Explanation
Congruent
Question
The diagram shows two sides of a rhombus ABCD.
(a) Write down the co-ordinates of A.
(………………… , …………………)
(b) Complete the rhombus ABCD on the grid.
Answer/Explanation
Ans:
(a) (−2, 3)
(b) Correct rhombus with 4th point at
(2,2)
Question
Calculate the obtuse angle x in this triangle.
x = [3]
Answer/Explanation
Ans:
16 109.3 or 109.26 to 109.27
Question
Write down the letters of all the triangles which are
(a) congruent to the shaded triangle,
(b) similar, but not congruent, to the shaded triangle.
▶️Answer/Explanation
(a) E, G
(b) A, B
Question
The length of a side of a regular hexagon is 6.8 cm, correct to one decimal place. Find the smallest possible perimeter of the hexagon.
▶️Answer/Explanation
If the length of one side of the regular hexagon is 6.8 cm, rounded to one decimal place, then the smallest possible perimeter would be:
Perimeter = 6 × Length of one side Perimeter = 6 × 6.8 cm Perimeter = 40.8 cm