Term
| What is the #1 Rule of Adding / Subtracting Fractions? |
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Definition
| They must have the same denominator. |
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Term
| What is a perfect square? |
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Definition
| It is another number squared: 1, 4, 9, 16, 25, 36, ... |
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Term
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Definition
| Two rays or two line segments in a plane with a common endpoint. |
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Term
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Definition
| It's not an angle. That is a common misspelling. |
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Term
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Definition
| The common endpoint of an angle. |
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Term
| When is an angle positive? |
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Definition
| When the rotation about the vertex goes in a counter-clockwise direction. |
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Term
| When is an angle negative? |
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Definition
| When the rotation about the vertex goes in a clockwise direction. |
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Term
| What are the two sides of an angle called? |
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Definition
| The initial side (where the angle starts) and the terminal side (where the angle ends). |
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Term
| What makes two angles complementary? |
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Definition
| When the sum of their measurements is 90 degrees. |
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Term
| What makes two angles supplementary? |
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Definition
| When the sum of their measurements is 180 degrees. |
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Term
| What are coterminal angles? |
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Definition
| Two angles with different measurements that start and end in the same place. |
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Term
| What does it mean for an angle to be in standard position? |
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Definition
| When the angle is on the x-y plane with its vertex at the origin and the initial side is along the positive x-axis. |
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Term
| What is a quadrantal angle? |
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Definition
| An angle in standard position with its terminal side on either the x-axis or the y-axis (so 0°, 90°, 180°, 270°, 360°, ...). |
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Term
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Definition
| An angle between 0° and 90° |
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Term
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Definition
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Term
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Definition
| An angle between 90° and 180° |
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Term
| What is a straight angle? |
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Definition
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Term
| How many radians make up one-half of a circle? |
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Definition
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Term
| How many radians make up one circle? |
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Definition
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Term
| What is the formula for arc length? |
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Definition
[image]
where s is the arc length,
r is the radius,
and [image] is the angle (in radians) |
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Term
| What is the formula for the area of a sector? |
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Definition
[image]
where A is the area,
r is the radius,
and [image] is the angle (in radians). |
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Term
| To convert degrees into radians, multiply by ...? |
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Definition
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Term
| To convert radians into degrees, multiply by ...? |
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Definition
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