Angles, Triangles, Cross Sections, Scale

Which are pairs of vertical angles?

• ∠COB & ∠COA
• ∠AOD & ∠AOC
• ∠COB & ∠AOD
• ∠BOD & ∠AOD

What angle pair is pictured?

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

Which are pairs of adjacent angles?

• ∠COB & ∠DOA
• ∠AOD & ∠AOC
• ∠COB & ∠AOD
• ∠BOD & ∠AOC

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

• 56°, they are supplementary
• 90°, they are complementary
• 124°, they are vertical

What is the measure of x?

• 60°, complementary
• 60°, supplementary
• 120°, vertical
• 120°, adjacent

Find the missing angle.  Find x.

• 20^o
• 70^o
• 160^o
• 180^o

Vertical angles are always

• acute
• total 180 degrees
• congruent (equal measures)
• adjacent angles

Find the missing angle.

• 60
• 70
• 50
• 140

These angles are...

• Complementary
• Supplementary
• Neither

Describe the cross section.

• rectangle
• square
• parallelogram
• circle