Dave was playing checkers with a friend. the ratio of games dave won was 10: 7. if dave won 80 games, how many games did his friend win?

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh