Question

explore the properties of angles and arcs formed by two intersecting secants.

1. find the difference of arc measures.

$m\widehat{ac}-m\widehat{de}=56^{circ}$

1. multiply the angle measure by 2.

$2(m\angle abc)=\square^{circ}$
$m\angle abc = 28^{circ}$
$m\widehat{ac}=80^{circ}$
$m\widehat{de}=24^{circ}$

Explanation:

Step1: Identify given angle measure

$m\angle ABC = 28^{\circ}$

Step2: Multiply by 2

$2\times28^{\circ}=56^{\circ}$

Answer:

$56$