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15 Cards in this Set
- Front
- Back
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angle factoids
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-ther are 90 degrees in a right triangle
- when two straight lines intersect, angles opposite of each other are equal - there is 180 degrees in a triangle - two lines are perpendicular when tehy meet at a 90 degree angle - there are 180 degrees in a straight line - bisect means to cut directly in half - four sided figures' angles add up to 360 degrees |
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line
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- a line has no width and extends infinitely
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ray
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-extends infinitely in one point but has an endpoint.
-the degree measure of the ray is 180 |
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line segment
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is part of a line and has two endpoints
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tangent
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-always perpendicular to the radius
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square
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all 4 sides equal
all 4 angles each equal 90 degrees area equal a side times another side perimeter equals 4s |
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parallelogram area
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base times height
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rectangle area
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length times width
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triangle area
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1/2 (base x height)
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triangle perimeter
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sum of all sides
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triangle angles
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-shortest side equals the smallest angle
- angles add up to 180 degrees |
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isoscoles triangle
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two sides are equal, angles opposite to each other add up
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diameter
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straight line distance from one point on the circle to another throught the center point
=2radius |
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chord
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-any line segment from one point on the circle to another
- the diameter is the largest chord |
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circumference
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-distance around the outside of the circle
- 2 x oi x radius |
