Question
(a) Find angle x.
(b) What type of angle is x ?
Answer/Explanation
(a)162
(b)obtuse
Question
(a) Find the value of x.
(b) EF is a diameter of the circle.
Find the value of y.
(c) Find the value of z in this isosceles triangle.
Answer/Explanation
(a) 51°
(b) 90°
(c)66°
Question
(a) A quadrilateral has four sides of equal length and two pairs of equal angles.
Write down the mathematical name for this quadrilateral.
(b) 
Three of the angles in a quadrilateral are 63°, 74° and 92°.
Work out the size of the fourth angle.
Answer/Explanation
(a)Rhombus
(b)131°
Question
Yim knows one angle of an isosceles triangle is 48°.
He says one of the other angles must be 66°.
Explain why Yim is wrong.
Answer/Explanation
Ans:
[Other angle could be] 84