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mPQS

mSQR. mPQS. mPQR. Note, we have to use 3 letters to uniquely identify each angle. “measure of angle”. “cut into equal halves”. ½  mDEF. mFEW. mDEW. mFEW. mDEF. mDEW. add to 90. right angle. “corner angles”. mMLW = 90. mKLW +. add to 180. straight line.

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mPQS

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  1. mSQR mPQS mPQR Note, we have to use 3 letters to uniquely identify each angle. “measure of angle” “cut into equal halves” ½  mDEF mFEW mDEW mFEW mDEF mDEW add to 90 right angle “corner angles” mMLW = 90 mKLW + add to 180 straight line mJHW = 180 mGHW + two lines intersect congruent (equal measure) opposite mPWS mRWQ mPWQ mRWS

  2. Now plug in … mABD = 2(8) + 26 mABD = 42 mCBD= 6(8) mCBD= 48 2x + 26 6x 2x + 26 + 6x = 90 8x + 26 = 90 x = 8 Check: 42 + 48 90  127 Now plug in … mPQS = 43 + 3 mPQS = 46 mSQR = 2(43) – 5 mSQR = 81 x + 3 2x – 5 x + 3 + 2x – 5 = 127 3x – 2 = 127 x = 43 Check: 46 + 81 127  Now plug in … mGHI = 5(23) – 1 mGHI = 114 3x – 3 5x – 1 3x – 3 + 5x – 1 = 180 8x – 4 = 180 x = 23 mFHG= 3(23) – 3 mFHG= 66

  3. 88 44 Be Careful here! P P P T T T x + 11 = ½  88 x + 11 = 44 x = 33 44 (x + 11) Q Q Q R R R 10x – 7 ??? 4x + 6 + 5x = 10x – 7 9x + 6 = 10x – 7 x = 13 6x + 1 4x + 6 5x mPQR = 10(13) – 7 mPQR = 123 10x – 13 6x + 1 = 10x – 13 14 = 4x x = 3.5 mPQR = 6x + 1 + 10x – 13 mPQR = 16x – 12 mPQR = 16(3.5) – 12 mPQR = 56 – 12 = 44

  4. Lesson Summary! Quietly review your notes. Add a short paragraph summarizing the key points of today’s lesson. When you and your assigned class partner are finished, discuss your summary with your partner and add things you missed. Be prepared to share your summary with the class.

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