Write down this problem on your COMMUNICATOR Be prepared to share your work with the class. Page ? of your INB review and prepare for the test. Greg needs to wash the windows on the second floor of a building. He knows the windows are 15 feet above the ground. Because of dense shrubbery, he has to put the base of the ladder 4 feet from the building. What ladder length does he need? 15.5 ft
ITEMS of BUSINESS Last day to retake Ch 5 test is Tuesday, Jan 6 th. TEST NEXT TIME. No retakes. End of Term TEST on Friday/Monday. No retakes. You can use up to 6 3x5 cards (one from each chapter).
Have your homework out on your desk.
Try this CHALLENGE question: Find the area of the composite figure. Round to a tenth. 8 8
REVIEW
Chapter 6’s Write them down on your 3x5 card. Remember It’s worth An extra 1% on your test!
Know how to solve equations with exponents & roots. 1. x 2 = = x 3 How do you undo a square (x 2 ) ? How do you undo a cube? (x 3 ) ? How do you undo a cube root? ( ) ? Square it Cube it
leg Be able to label parts of a RIGHT triangle. ab cleg hypotenuse
If you’re finding a LEG… HYP 2 – leg 2 If you’re finding a HYPOTENUSE … leg 2 + leg 2 LEG HYPOTENUSE Know how to USE the Pythagorean theorem.
Find the Missing Side Lengths
Pythagorean Theorem Converse of the Pythagorean Theorem then If Know the CONVERSE P-THRM & how to use it.
Are these Right Triangles? 6 8 A triangle with these sides 6, 9, yesnoyes
Greg needs to wash the windows on the second floor of a building. He knows the windows are 15 feet above the ground. Because of dense shrubbery, he has to put the base of the ladder 4 feet from the building. What ladder length does he need? Gus is framing a house. The length of the house is 30 ft. The width is 22 feet. Once the outside walls are framed, Gus measures the diagonal. It measures 37.2 ft. to the nearest tenth. Draw a Picture and determine if Gus has a perfect rectangular house? 15.5 ft Yes, it is rectangular (or right) You know it’s a rt. triangle. Find the missing side length. You know the side lengths. Find out if it’s a right triangle.
(-7, 3) and (-2, 8) A. Plot the Points B. Create a Rt. Triangle. The line connecting the points is the hypotenuse C. Use the Pythagorean Theorem to find the distance. 5 5 ? 7.1 Be able to apply the p-thrm to different scenarios. Find distances!
Find areas!
Area of a Rectangle A = lw w l Important Formulas
AREA of a circle A = πr 2 That’s r x r NOT 2 x r !! radius AREA of a Semi-circle A = ½ πr 2 AREA of a Triangle A = ½ bh h b radius diameter
Area of a Circle – Area of a Rectangle Find areas!
Find diagonals of boxes.
Do the CIRCLED PROBLEMS on the PRACTICE TEST. When you finish, you can work on the rest of the problems. PRACTICE TEST
CIRCLED ANSWERS
What’s your Score? Each answer part is worth 1 point 28 possible Now, finish the rest of the Practice Test!!!
SHOW YOUR WORK Worksheet Practice Test