Math Triangle stuff
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Concurrent lines | 2 or more lines that intersect in one point
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| Point of concurrency | the intersection point
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| Centroid | the point of concurrency of the medians of a triangle
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| Median | a segment that joins a vertex of a triangle to the midpoint of the opposite side
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| Circumcenter | point of concurrency of the perpendicular bisectors of the sides of a triangle
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| Incenter | point of concurrency of the bisectors of the angles of a triangle
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| Orthocenter | point of concurrency of the altitudes of a triangle
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| altitude | a perpendicular segment from a vertex of the triangle to the line containing the opposite side
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| Equilateral | 3 congruent sides
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| Isosceles | at least 2 congruent sides
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| Scalene | no congruent sides
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| Equiangular | 3 congruent angles
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| Acute | 3 acute angles
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| Obtuse | 1 obtuse angle
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| Right | 1 right angle
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| 3 sides | triangle
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| 4 sides | quadrilateral
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| 5 sides | pentagon
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| 6 sides | hexagon
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| 7 sides | heptagon
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| 8 sides | octagon
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| 9 sides | nonagon
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| 10 sides | decagon
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| 11 sides | hendecagon
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| 12 sides | dodecagon
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| 5 segments associated with a triangle | 1. perpendicular bisectors
2. angle bisectors
3. medians
4. altitudes
5. midsegments
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| perpendicular bisector | a segment that is perpendicular to a side of a triangle at the midpoint of the side
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| angle bisector | a segment that bisects an angle of a triangle
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| median | a segment whose endpoints are a vertex of the triangle and the midpoint of the opposite side
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| altitude | the perpendicular segment from a vertex to the opposite side or a line containing the opposite side
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| midsegment | segment that connects the midpoints of any two sides of a triangle
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
emilyradke
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