Basic of geometry

Right, acute, or obtuse?

• Acute
• Right
• Obtuse

What angle pair is pictured?

• Alternate Interior Angles
• Supplementary Angles
• Vertical Angles
• Corresponding Angles

Identify which of the following pair is complementary?

• $65\degree\ ,\ 115\degree$

• $63\degree\ ,\ 27\degree$

• $112\degree\ ,\ 68\degree$

• $110\degree\ ,\ 40\degree$

Tell whether the angles are complementary or supplementary. Then find the value of x.

• Complementary; x=3.4
• Complementary; x=45
• Supplementary; x=20
• Supplementary; x=175

Tell whether the angles are complementary or supplementary. Then find the value of x.

• Complementary; x=25

• Complementary; x=5

• Supplementary; x=25

• Supplementary; x=5

Find the value of x.

• 15

• 16

• 18

• 19

3. Find X

• 59
• 31
• 177

If ∠COB is 124°, then what is ∠BOD? How are they related?

• 56°, they are adjacent
• 90°, they are right angles 
• 124°, they are vertical

What are vertically opposite angles?

• Angles that are adjacent to each other of same measurement

• Angles that add up to 180°

• Angles that are opposite of each other when lines intersect

• Angles that add up to 90°

What angle is adjacent complementary to angle 5

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