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lorasvet [3.4K]
3 years ago
14

Question:

Mathematics
1 answer:
alexandr1967 [171]3 years ago
5 0

Answer:

Part 1) The draw in the attached figure

Part 2) m\angle ABD=50^o

Step-by-step explanation:

Part 1)  Draw the described circle

The draw in the attached figure

Part 2) What is the measure of angle ABD

step 1

Find the measure of arc AD

Remember that

arc\ AD+arc\ DC+arc\ AC=360^o ----> by complete circle

substitute the given values

arc\ AD+124^o+68^o=360^o

arc\ AD=360^o-192^o=168^o

step 2

Find the measure of angle ABD

we know that

The measurement of the external angle is the half-difference of the arches that comprise

In this problem

The measure of angle ABD is an external angle

so

m\angle ABD=\frac{1}{2} [arc\ AD-arc\ AC]

substitute the given values

m\angle ABD=\frac{1}{2} [168^o-68^o]=50^o

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