2.1 Formative

What is the value of x?

• 51⁰
• 90⁰
• 39⁰

This diagram shows what type of angle pairs?

• Supplementary
• Complementary
• There are no angle pairs

The image shows a pair of complementary angles.

• False
• True

Complementary angles total 90⁰

• True
• False

What are complementary angles?

• Angles that add up to 180°
• Angles that add up to 90°
• Angles that are equal to each other
• Angles that are opposite of each other when lines intersect.

What are supplementary angles?

• Angles that add up to 180°
• Angles that add up to 90°
• Angles that are equal to each other
• Angles that are opposite of each other when lines intersect

What type of angle pair are the blue arrows pointing to?

• same side exterior

• same side interior

• corresponding

• alternate interior

What type of angle pair are the green arrows pointing to?

• corresponding

• same side interior

• same side exterior

• alternate interior