AnswersGeometry - Semester 1 PathwaysTriangles and Their Side Lengths

Centroid and Orthocenter Answers

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1
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Triangle A B C is shown. Lines are drawn from each point to the opposite side and intersect at point D.

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A
Point D can be the orthocenter because it is the point of intersection of three segments coming from the vertices of the triangle.
B
Point D can be the orthocenter because each vertex angle appears to be bisected.
C
Point D cannot be the orthocenter because the orthocenter of an obtuse triangle is located outside the triangle.
D
Point D cannot be the orthocenter because the orthocenter of an obtuse triangle is located on the perimeter of the triangle.
2
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A centroid is the intersection of three

A
altitudes in a triangle.
B
perpendicular bisectors in a triangle.
C
angle bisectors in a triangle.
D
medians in a triangle.
6

In which type of triangle is the orthocenter on the perimeter of the triangle?

A
a right triangle
B
an acute triangle
C
an obtuse triangle
D
an equilateral triangle
7

In the diagram, GB = 2x + 3..

Question illustration
A
5 units
B
10 units
C
15 units
D
30 units
10

Triangle H J K is shown. Lines are drawn from each point to the opposite side and intersect at point G to form line segments H C, J E, and K D.

Question illustration
A
Point G cannot be a centroid because JG does not equal GE.
B
Point G cannot be a centroid because JG and GE are in the ratio 1:2.
C
Point G can be a centroid because GE and JG are in the ratio 2:1.
D
Point G can be a centroid because JG + GE = JE.

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