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…
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