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Veseljchak [2.6K]
3 years ago
13

Line HF is tangent to circle D at point E. SEgment DE is the radius of circle D, what is true about DEF?

Mathematics
2 answers:
Sati [7]3 years ago
5 0
D.angle def is an obtuse angle
ivolga24 [154]3 years ago
3 0

When we draw a circle with the centre at D and have a tangent HF to the circle D at point E, the angle DEF will be a right angle.

In other words angle DEF = 90 degrees

Since HF, the tangent, is a straight line, the other angle DEH should also be = 90 degrees because the straight line has an angle of 180 degrees

Therefore angle DEF = angle DEH = 90 degrees

Therefore, angle DEF is congruent to angle DEH (Option A)


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