Fairfield 04-04-2025 Angle pairs & Special Angles

Open Ended

Solve the Wordplexers. Remember to write the number, then the phrase.

​Take out your notes

Unit Objectives

​Recognize and describe relationships among angles formed by two intersecting lines, including:

• Supplementary angles: Two angles whose measures sum to 180 degrees

• Complementary angles: Two angles whose measures sum to 90 degrees.​

• Vertical angles: Opposite angles formed by two intersecting lines are congruent.​

• Adjacent angles: Two angles that share a common side and a common vertex.

• Angle Relationships: When parallel lines are cut by a transversal:

  • Corresponding, alternate interior, and alternate exterior angles are congruent.

  • Same-side interior angles are supplementary.

Multiple Choice

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.

Draw

Draw a linear pair

Multiple Choice

Find the equation that you could solve to to find the value of x, and the actual value of x.

• 123 + 3x = 90

  15

• 123 + 3x = 90

  16

• 123 + 3x = 180

  x = 18

• 123 + 3x = 180

  x = 19

Match

Match the following angles to their COMPLEMENT.

Remember: complementary angles = 90 degrees

• 20°

• 19°

• 45°

• 0°

• 32°

70°

71°

45°

90°

58°

• 70°

• 71°

• 45°

• 90°

• 58°

​Take out your notes

Put in earbuds

Links to Video Notes

1) https://drive.google.com/file/d/1gSoerqVDJw-KAR42k6L3ltH29DWnnwLU/view?usp=sharing
2) https://drive.google.com/file/d/1rDwa-WhNEVI_liOUr19hGETW4ziA-dGe/view?usp=sharing
3) https://drive.google.com/file/d/1nGAi99rrZe37wglqzo0BlDnH8uz4SKzf/view?usp=sharing

Classwork/Homework
IXL Grade 8
R1: Identify complementary, supplementary, vertical, adjacent, and congruent angles
R2: Find measures of complementary, supplementary, vertical, and adjacent angles
R3: Write and solve equations using angle relationships

Poll

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