WAEC - Mathematics (1998 - No. 54)
In the diagram above, |PQ| = |PR| = |RS| and ∠RSP = 35°. Find ∠QPR
70o
50o
45o
40o
35o
توضیح
In the diagram above,
α = 35º ( base angles of isosceles triangle)
< PRQ = 35º + 35º = 70º ( sum of opp. interior angles)
< QPR = 180º - ( 70 + 70)º = 40º