
Geometry 1st Semester Review
Flashcard
•
Mathematics
•
11th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the relationship between the lengths of shadows cast by similar triangles?
Back
The lengths of the shadows are proportional to the heights of the objects casting them.
2.
FLASHCARD QUESTION
Front
How do you find the height of an object using similar triangles?
Back
Set up a proportion using the heights and shadow lengths of the objects, then solve for the unknown height.
3.
FLASHCARD QUESTION
Front
What is the definition of a centroid in a triangle?
Back
The centroid is the point where the three medians of the triangle intersect, and it divides each median into a 2:1 ratio.
4.
FLASHCARD QUESTION
Front
If angle 6 is 25 degrees, what is the relationship between angle 6 and angle 7 if they are supplementary?
Back
Angle 7 would be 180 - 25 = 155 degrees.
5.
FLASHCARD QUESTION
Front
What is the point-slope form of a linear equation?
Back
The point-slope form is given by y - y1 = m(x - x1), where m is the slope and (x1, y1) is a point on the line.
6.
FLASHCARD QUESTION
Front
How do you determine if two lines are parallel?
Back
Two lines are parallel if they have the same slope.
7.
FLASHCARD QUESTION
Front
What is the formula for finding the length of a median in a triangle?
Back
The length of a median can be found using the formula: m = 1/2√(2a^2 + 2b^2 - c^2), where a and b are the lengths of the sides adjacent to the median and c is the length of the opposite side.
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