Lesson 3: Isosceles Triangles Answers
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3 connecting lines are shown. Line D F is horizontal. Line D E is about half the length of line D F. Line F E is about one-third of the length of line D F.
A
EF + FD > DEB
ED + EF < DFC
ED + EF > DFD
EF + FD < DE2
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Triangle ABC is an obtuse triangle with the obtuse angle at vertex B. Angle A must be
A
less than 90°.B
greater than 90°.C
congruent to angle B.D
congruent to angle C.3
Triangle A B C is shown. Side A B has a length of 12. Side B C has a length of x. Side A C has a length of 15.
A
0B
1C
3D
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Iliana claims that she can construct a triangle from a 12-inch rod, a 36-inch rod, and a 39.4-inch rod. Which statement explains whether she is correct?
A
Iliana cannot construct a triangle because the sum of the two smaller sides will not be greater than the third side.B
Iliana cannot construct a triangle because the sum of the two smaller sides will be greater than the third side.C
Iliana will be able to construct a triangle because the sum of any two sides is greater than the third side.D
Iliana will be able to construct a triangle because the sum of any two sides is less than the third side.Did you find these answers helpful?
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