Question

ADB ВIf m2ABC = 25°, and m2CBD = 35°,then m ABD = [ ? 1°

Answer 1

m∠ABD = 60°

Explanation:

m∠ABC = 25°

m∠CBD = 35°

From the diagram:

m∠ABC + m∠BCD = m∠ABD

$\begin{gathered} m\angle ABD\text{ = 25 + 35} \\ \angle ABD\text{ = 60}\degree \end{gathered}$