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9 Cards in this Set
- Front
- Back
- 3rd side (hint)
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4 Triangle facts |
#1. 3 sided #2. Angles add to 180 degrees. #3. two smaller sides must be LARGER than big side . (BIGGER!! not equal.) SIDES 3,4,7? Not triangle 7=7 #4. angles and sides are related : big opposite big. Small opp small: (big side opposite big angle and small angle is opposite small side. Middle across from middle) |
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3 Right triangle? Facts |
#1. It has a 90 degree angle. # 2. Small sides A and B: A squared + B squared = C squared #3. Hypotenuse is opp big angle
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" owow ! " allows us to find any segment length of lines touching circle and crossing outside a circle |
O TIMES W = o times w 2 lines intersecting outside a circle where the lines touch the circle in 2,3 or 4 places form a proportional product of the outside length times the whole length as such O times W = O times W |
Whole = inside part plus outside part Or Whole = all outside (tangent line) So in pic 3 x 9 = 2 x (2+x) use solver 9x3 = 2 x13.5 |
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Peepee how long is Calvin's p? |
9 times X = 3 times 6 now you can use solver or just do simple algebra to get x= 2 |
Did you ever see that pirated car sticker image of Calvin tinkling? Memory aid is p times p or p p which sounds like tinkling so how far?? : ) |
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Find x |
Center angle = length of intercepted arc so x= 89 |
Try this yoga. Stand with arms extended out straight in front of you. Close eyes. Hum /chant " mmmmm. I am centered mmmm I'm centerd mmmm. centers same mmmm centers same"... Now as you hum pull arms apart till they are straight out beside you. You go from 90 front to 180 arc sides...which your arms connect to your center. |
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Owow what is outside part? |
#1. Outside line l = X. Out of m = z #2. Whole part line m = Z. Whole Parr of Line l = ( x + y) Therefore x times ( x+y ) = z times z |
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Mnemonic Owow; identify the parts outside and whole. |
O times w = o times w. So the whole part 1 = (w + x) and whole part 2= (y+z)... note it is wrong if written without parentheses! |
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Inscribed chord and tangent |
Inscribed tangent is |
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Central angle and arc measure? |
Center angle equals the arc measure it cuts |
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