5-Minute Check

Find m ABD

1. Answer 18 & 72

2. Answer 180, Straight Line

Objective(s):Students will analyze special angle relationships to determine angle measures.

Why? So you can determine measures in a real world application, as seen in EX 12.

Mastery is 80% or better on the 5-Minute Checks and Indy Work

Vocabulary

Skill Develop- Identify complements and

supplements

Answer 1 part at a time

.

Quick Write

• Are ABD and BDE adjacent angles? Is there any relationship? Justify you answers.

Think, Ink,Share(Draw the figure in your notes)

Answer Angles DEF & ABC

Answer Angles FEG & ABC

Answer Angles DEF & FEG

Guided--Find the measures of complements and supplements

Use a picture to help1

257

so

Use the angle addition postulate

Guided---Find the measures of complements and supplements

Use a picture to help

so

Use the angle addition postulate

Your turn: (complete in your notes)

Answer 17 degrees

Answer 143 degrees

Let’s apply it

These angles are supplementary and they form a _______________Linear pair

Now substitute expressions in

Now solve for x

Are we done?

What was the Objective for Today?

• Students will analyze special angle relationships to determine angle measures.

• Why? So you can determine measures in a real world application, as seen in EX 12.

• Mastery is 80% or better on the 5-Minute Checks and Indy Work

On Your Own

• Page 38-39

• # 2-30 Even

Exit Slip

• Explain in your own words what Adjacent, Complimentary and Supplementary are…