In the figure, AOB is a straight line. Three angles meet at point O on the same side of AOB: ∠AOC = 48°, ∠COD = 2x°, and ∠DOB = (x + 12)°. Find the value of x.
FREE QUIZ · PRIMARY 5 MATHEMATICS
Angles
Five MCQs on Angles. Pick an answer, see the specific misconception. The diagnosis comes after the score.
Two straight lines AB and CD intersect at point O. ∠AOC = 112°. Find ∠AOD.
Four angles meet at point O. Angle AOB = p°, angle BOC = 130°, angle COD = p° and angle DOA = 80°. Find the value of p.
In the figure, triangle ABC has AB = AC. Point D is on side BC such that AD = BD. Given that ∠ABD = 35°, find ∠DAC.
Three rays from point O divide the full angle at O into three parts: angle AOB = 2n°, angle BOC = (3n + 10)° and angle COA = (n + 50)°. Find the value of n.