Incenter and Circumcenter — Unit test Answers
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A regular pentagon is created using the bases of five congruent isosceles triangles, joined at a common vertex.
A
54°B
72°C
108°D
144°22
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Triangle XYZ is isosceles. Angle Y measures a°.
A
2aB
StartFraction a Over 2 EndFraction
C
90 a
D
180 2a23
If triangle RST is an acute triangle, then m∠S must be
A
less than 90°.B
equal to 90°.C
equal to 100°.D
greater than 90° and less than 180°.24
Triangle A B C is shown with its exterior angles. Line C B extends through point D. Line B C extends to form exterior angle that is 135 degrees. Angle C A B is 75 degrees.
A
m∠ABC = 15°B
m∠ABC = 45°C
m∠ABC = 60°D
m∠ABC = 75°25
Which is the only center point that lies on the edge of a triangle?
A
the incenter of a right triangleB
the incenter of an obtuse triangleC
the circumcenter of a right triangleD
the circumcenter of an obtuse triangleDid you find these answers helpful?
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