Question

finding angle measures use the figure at the right. 22. if m∠9 = 110°, then m∠8 = ? .

Explanation:

Step1: Identify angle relationship

∠8 and ∠9 are supplementary (form a linear pair), so \( m\angle8 + m\angle9 = 180^\circ \).

Step2: Solve for \( m\angle8 \)

Substitute \( m\angle9 = 110^\circ \) into the equation: \( m\angle8 = 180^\circ - 110^\circ \).
\( m\angle8 = 70^\circ \)

Answer:

\( 70^\circ \)