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1.4 Angles Outline Geometry Name _____________________ Date _________________ Angle Fill in the outline with a definition (next to words underlined), a diagram, or answer the questions. Refer to section 1-4, starting on page 24 in your book. 1. How is the Protractor Postulate like the Ruler Postulate? Angle Classifications (write the definitions) 2. Acute angle: 3. Right angle: Question: how do we know this is a right angle? K 4. Obtuse angle: 5. Straight Angles 6. Read the Angle Addition Postulate. Fill in the blank based on diagram: a. 𝑚∠𝑃𝑄𝑆 + 𝑚∠𝑆𝑄𝑅 = ______________________ b. So if the measure of ∠𝑃𝑄𝑆 𝑖𝑠 50o and m∠𝑆𝑄𝑅 is 25o, what is 𝑚∠𝑅𝑄𝑃? 7. Find m RQT if m PQR = 170, m SQT = 30, and m 2 = 90. 2 8. If m MYZ = 160, what is m MYW? Congruent Angles: 9. For the two congruent angles below, write a congruence statement and an equality statement. Look at bottom of page 26 for reference. 10. How are the angles marked as congruent? E B G F C A 3 Use this picture for the next questions. L M 35o 35o J P K 11. Angle Bisector 12. Consider LKP and KM . Is KM a bisector? Why or why not? 4