Angles and Measures Trig

This is what kind of angle?

• obtuse

• right

• straight

• acute

Vertical angles are always

• acute

• total 180 degrees

• congruent (equal measures)

• adjacent angles

Which type of triangle is pictured?

• Equilateral Triangle

• Right Isosceles Triangle

• Obtuse Scalene Triangle

• Obtuse Equilateral Triangle

Find the measure of the indicated angle (?) round to the nearest tenth.

• 9.4

• 55.2

• 20.15

• 19.4

Which sketch is -295°?

• A

• B

• C

• D

P4 A. The initial side lies along the positive ​ (a)   and the terminal side lies in Quadrant ​ (b)   . The angles share the same terminal side (and initial side), so they ​ (c)   co-terminal angles. The rotation direction is different: one is positive (​ (d)   ) and the other is negative (​ (e)   ).

• x-axis

• 3

• are

• counterclockwise

• clockwise

• y-axis

• 2

• are not

Find the measure of the indicated angle (?) round to the nearest tenth.

Mathematical Equivalence

ON

• 20
• 30
• 45
• 40

Which of the following angles are co-terminal to 450^o?

• 450^o, -450^o

• 90^o, -270^o

• 270^o, -90^o

• 420^o, -330^o