Level 1
In the figure, AOB is a straight line and CO is perpendicular to OD. ∠DOE = 12 ° and ∠EOF = 148 °. Find ∠COF.
1 m
Level 1
In the figure, what is the value of ∠t?
2 m
Level 1
In the figure, what is the sum of ∠x and ∠y?
2 m
Level 1
In the figure, ABC is an equilateral triangle and ∠BCD = 80°. Find ∠z.
2 m
Level 1
In the figure, what is the value of ∠x?
2 m