circles
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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| Central Angle | Angle = Arc
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| Inscribed Angle | Angle = 1/2 Arc
Arc = 2 Angles
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| Inscribed Triangle | Sum of the arcs = 360
Sum of the angles in the triangle = 180
Double an angle to find the arc
Cut an arc in half to find the angle
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| Inscribed quadrilateral | Sum of the arcs = 360
Sum of the angles in the quadrilateral = 360
Double an angle to find the arc
Cut an arc in half to find the angle
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| DIAMETER!!! | CUTS THE CIRCLE IN 1/2
A LINE THAT GOES ACROSS THE WHOLE CIRCLE
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| Two Chords |
AB = CD
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| Two Tangents |
Intersection (where the tangents meet) is equidistant to the point of tangency (where the tangents meet the circle)
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| Radius/Diameter and Chord | RIGHT TRIANGLES!!
Diameter/radius cuts the chord in half.
Diameter/radius makes a 90 degree angle to chord
RIGHT TRIANGLE!!
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| Radius/Diameter and Tangents | Diameter/radius makes a 90 degree angle to the tangent
RIGHT 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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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:
Mrs.Stichter
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