∠ace is formed by two secants intersecting outside of a circle. if minor arc bd = 28°, minor arc ab = 112°, and minor arc de = 112°, what is the measure of ∠ace?

∠ACE = 40°

Step-by-step explanation:

Refer the attached figure .

Since we know that sum of measures of all arcs is 360°

arc AE + arc AB +arc BD +arc DE = 360°

arc AE+ 252°=360°

arc AE=360°

-252°

arc AE=108°

Now to find the ∠ACE , we will use the theorem.

Theorem : If two secants intersect to form the vertex of an angle outside a circle and the sides of the angle intercept arcs on the circle,then the measure of the angle is equal to one-half the difference of the measures of the arcs intercepted by the sides of the angle.

For∠ACE

The arcs intercepted by the sides of the angle.: arc AE =108° and arc BD=28°

So, by theorem :

Hence the measure of ∠ACE is 40°

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step-by-step explanation:

step-by-step explanation:

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