Co-Terminal Angles in Unit Circle Diagram

What does it mean for two angles to be coterminal?

• Both angles rotate in the same direction

• They both have the same terminal side

• I remember that lady in the Edpuzzle mentioning it but I'm drawing a blank...😱

• They both have the same angle measure

• Wait...we had an Edpuzzle on this...? 😨

Which is a positive coterminal angle for 125 degrees?

• 515 degrees

• 505 degrees

• 485 degrees

• 488 degrees

• 392 degrees

Which is a negative coterminal angle for 45 degrees?

• -315 degrees

• -290 degrees

• -300 degrees

• -330 degrees

• -310 degrees

Which angles are coterminal angles for 90 degrees?

• 810 degrees

• -630 degrees

• 1,170 degrees

• 450 degrees

• -270 degrees

Which is a coterminal angle for 67 degrees?

• -297 degrees

• -293 degrees

• -300 degrees

• 450 degrees

• 454 degrees

Select all coterminal angles of 55 degrees

• 775 degrees

• 415 degrees

• -305 degrees

• -355 degrees

• 450 degrees

Which is a positive coterminal angle for π/4?

• 9π/4

• 2π

• 7π/6

• 5π/3

• 11π/4

Which is a negative coterminal angle for π?

• -5π/4

• -7π/6

• -π

• -2π/3

• -π/2

What are the coterminal angles for π/2?

• -π/2

• 3π/2

• -3π/2

• 5π/2

• 7π/2

How many coterminal angles does 180 degrees have?

• 20

• 6

• 75

• 2

• Infinitely many