Question

lesson 1.2 · finding angles
name _
period _ date _
for exercises 1 - 5, use the figure at right to complete each statement.

1. a is the _ of ∠bae.
2. $overline{ad}$ is the _ of ∠bae.
3. $overline{ad}$ is a _ of ∠dae.
4. if $mangle bac = 42^{circ}$, then $mangle cae=$ _.
5. $angle dabcong$ _.

6 - 9 use your protractor to find the measure of

Explanation:

Step1: Observe angle - bisector property

From the figure, assume $\overrightarrow{AC}$ bisects $\angle BAE$. If $\angle BAC = 42^{\circ}$, then $\angle CAE=\angle BAC$.

Step2: Determine the angle measure

Since $\angle CAE=\angle BAC$ and $\angle BAC = 42^{\circ}$, so $\angle CAE = 42^{\circ}$.

Answer:

$42^{\circ}$