AnswersAZ-Geometry A MA201Isosceles Triangles

Centroid and Orthocenter Answers

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1
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Which figure has an orthocenter outside the triangle?

A
[Image: A triangle has angle measures of 30, 75, and 75 de...]
Option A
B
[Image: A triangle has angle measures of 54, 56, and 74 de...]
Option B
C
[Image: A triangle has angle measures of 45, 110, and 25 d...]
Option C
D
[Image: A triangle has angle measures of 90, 48, and 42 de...]
Option D
2
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Manny says that the diagram shows a centroid. Is he correct? Why or why not?

A
no, because the centroid is where the altitudes meet
B
no, because the centroid is where the medians meet
C
yes, because the centroid is where the altitudes meet
D
yes, because the centroid is where the medians meet
5

What error did Tracy make?

A
She used AG = 2EG, but the correct statement is 2AG = GE.
B
She found that x = 4, but the correct value for x is 2.
C
She used GF = 2BG, but the correct statement is BG = 2GF.
D
She found that GF = 64, but the correct value of GF is 8.
8

Complete the statement about how to prove that the medians of an isosceles triangle meet at a point.

Answers:
To prove that the medians of an isosceles triangle meet at a point, show that the of a side lies on the line containing the opposite and the point where the other two intersect.:midpoint
To prove that the medians of an isosceles triangle meet at a point, show that the of a side lies on the line containing the opposite and the point where the other two intersect.:vertex
To prove that the medians of an isosceles triangle meet at a point, show that the of a side lies on the line containing the opposite and the point where the other two intersect.:medians
9

Complete the statement about how to prove that the medians of an isosceles triangle meet at a point.

Answers:
To prove that the medians of an isosceles triangle meet at a point, show that the of a side lies on the line containing the opposite and the point where the other two intersect.:midpoint
To prove that the medians of an isosceles triangle meet at a point, show that the of a side lies on the line containing the opposite and the point where the other two intersect.:vertex
To prove that the medians of an isosceles triangle meet at a point, show that the of a side lies on the line containing the opposite and the point where the other two intersect.:medians
10

medianmidpoint✔ vertex

A
median
B
midpoint
C
✔ vertex
11

altitudes✔ mediansmidpoints

A
altitudes
B
✔ medians
C
midpoints

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Centroid and Orthocenter Answers — AZ-Geometry A…