Looking at the diagram, work out the angle of a) x, b) y, and c) z
a) the triangle is isosceles so the two missing angles must be identical. all angles in a triangle add up to 180. therefore, 180-40=140 140/2 = 70* = xb) this triangle has two angles given already, so the same rule applies. 90 + 40 = 130 180-130 = 50 = yc) now you know two out of three angles on the straight line. the angles at a point on a straight line all add up to 180. therefore, x + y + z = 180. 70+50+z=180. 120+z=180. z = 60.
EG
Related Maths GCSE answers
All answers ▸Farmer Joe has a rectangular pen to hold his animals. The pen’s length is 5 meters longer than the width. The pen’s area is 84 meters. Find it’s width.
Convert 60km/h to m/s
In a cinema, male to female ratio is - 1:3. The ratio of the females, who like popcorn to females who don't like popcorn is 2:1. 10 girls don't like popcorn. How many people are there in the cinema altogether?
Line L1 passes through points (4,6) and (12,2). Line L2 passes through the origin and has gradient -3. The two lines intersect at point P. Find the co-ordinates of P.