Question

which angles are adjacent to each other?
∠3 and ∠11 ∠1 and ∠4 ∠9 and ∠2 ∠14 and ∠16
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not feeling ready yet? these can help:
angle vocabulary
lesson: supplementary angles
lesson: adjacent angles
lesson: complementary a
lesson: vertical angles

Explanation:

Step1: Recall the definition of adjacent angles

Adjacent angles share a common side and a common vertex and do not overlap.

Step2: Analyze each pair

• For \(\angle3\) and \(\angle11\): They do not share a common side or vertex.
• For \(\angle1\) and \(\angle4\): They share a common side and a common vertex and do not overlap.
• For \(\angle9\) and \(\angle2\): They do not share a common side or vertex.
• For \(\angle14\) and \(\angle16\): They are vertical angles (opposite angles formed by two intersecting lines), not adjacent.

Answer:

\(\angle1\) and \(\angle4\)