This week in Mrs.Hoffer class we learned about trigonometry. Mrs.Hoffer taught us the three formulas which is sin, cos, and tan. We did lots of examples to help us understand it better. Trigonometry is really an easy lesson to learn. Mrs.Hoffer taught me a great lesson this week.
This week in Mrs.Hoffer class we touched back on Pythagorean Theorem. We wrote notes to help us remember Pythagorean Theorem. We had to do an assignment on Pythagorean Theorem in our math textbook. Mrs.Hoffer had to re-teach us how to do Pythagorean Theorem using fractions and as you can see by my example picture that’s the problem she showed us how to do. We’re already on fast learning train this 2nd 9 weeks.
The topic I chose to explain how to do is rotation. I’m going to show you how to rotate 180* counterclockwise/clockwise. First, you have to make a chart of x and y. You put your numbers in the correct chart the way they are. Then you go over to the image chart and graph the numbers in the x and y column. If the numbers are negative change them to positive and if their positive change them to negative.
example- A ( -1,3) B (4,6) C (-8,-9) D(7,-2)
A’ ( 1,-3) B’ (-4,-6) C’(8,9) D’(-7,2)
This is the 180 clockwise/Counterclockwise example using the (-x,-y) concept.
Also, this 9 weeks one thing I learned that I really understood was dialations. Dialations was an really easy and simple lesson concept. It’s not that many steps or formulas that goes with it. Dialations was the easiest thing Mrs.Hoffer taught me this 9 weeks. She’s really developing me in Math because it’s my weakest subject.
This week we learned about roatations clockwise and counterclockwise. We learned the formulas to both. It’s a catchy trick to the formulas and is that they correlate to each other. I also realized this lesson correlate with lasts week lesson. Mrs.Hoffer has been really developing me in math so far this 9 weeks.
I’m going to explain to you how to do this problem. First you get your coordinates points. Next, you flip your coordinates points and the x points become the y points and the y points become the x points. Then you label your original coordinate points. Last, you label your newly flipped coordinate points.
This week in class we learned about reflections. We learned about pre-image and image. We learned how to do y=x drawing shapes on the coordinate. I learned how to do y over x axis and x over y axis. The lesson this week I really understood.
The question I’m going to explain to you how to do is number 17 and 18. For number 17 you have to determine weather each side is congruent or not. Number 17 is congruent because both sides are the same length 3m. Number 18 is congruent also because both sides are the same length which is 12yd. If you need extra help see me after class. Mr.Wilson
This week in Geometry class we learned about different types of angles. The angles were Vertical, Complementary, Supplementary, Linear, and Adjacent. We also learned about Right , Acute , and Obtuse angles. This lesson was easy. Im really learning more than what I did in middle school.
Brandon Wilson Geometry Blog 