Draw 2 lines intersecting. Label the four angles a, b, c, d. What do all four angles add up to? Write an equation to show this Using your rule for adjacent angles, write 2 equations: a. One for the sum of angles a and b b. One for the sum of angles b and c Put your equations equal to one another Simplify What can you conclude? Explain clearly in words
Added by Jose Manuel T.
Close
Step 1
Label the four angles as angle 1, angle 2, angle 3, and angle 4. Show more…
Show all steps
Your feedback will help us improve your experience
Ankur S and 72 other Geometry educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Write the name or statement of the definition, postulate, property, or theorem that justifies the statement about the diagram. If $\angle A D F$ and $\angle 4$ are supplements, then $m \angle A D F+m \angle 4=180$ .
Deductive Reasoning
Planning a Proof
Four angles are formed by the intersecting lines. Find the measure of each angle. FIGURE CAN'T COPY.
More with Geometry and Graphs
Points, Lines, and Angles
Recommended Textbooks
Geometry A Common Core Curriculum
Geometry
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD