Geometry 1.2, Measuring and constructing segments

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An explanation of how a point corresponds to one number on a ruler, the Ruler Postulate, the distance between any two points is the absolute value of the difference of the coordinates, finding the length of a segment, congruent segments and tick marks, using a compass and straight edge to construct a congruent segment, the Segment Addition Postulate, midpoints, bisectors, how a segment bisector divides a segment in half at the midpoint, using midpoints to find length, and collinearity.
JoAnn's School High School Geometry
• High School Geometry C...
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Опубликовано:

12 окт 2024

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Комментарии : 33

@JoAnnsSchool Год назад

Textbook available at most booksellers: Publisher Holt McDougal; 1st edition (June 14, 2011) Language English Hardcover 1184 pages ISBN-10 0547647093 ISBN-13 978-0547647098 Reading age 14 - 17 years Lexile measure 890L Grade level 9 - 12 Item Weight 4.71 pounds Dimensions 8.5 x 1.75 x 11 inches

@LovelyNomad2024 Месяц назад

you are excellent teacher. tnx

@yoitsme9629 4 года назад

I had a terrible geometry teacher in my sophomore year. He always sleeps in class and I didn't understand anything . I am good in all maths except in geometry. I'll be freshman in college this fall. So I'm take this quarantine as an opportunity to retake the class. Thank you so much for helping. Much love and respect.

@JoAnnsSchool 4 года назад

A long time ago, back when I was in high school, I got straight A's in Algebra. When I took Geometry in my sophomore year, I failed. I had a horrible teacher. The students used to fall asleep in his class. I took geometry my 1st year of college and had a wonderful teacher. She made me fall in love with math again. I hope you find my geometry playlist helpful! :-)

@yoitsme9629 4 года назад

@@JoAnnsSchool Thank you for sharing your story. I love stories like that. It inspires me :)

@nonameidea89 Месяц назад

How do you take geometry sophomore? I’m taking geometry freshman year

@scarlett8031 2 года назад

I know this video is old but thank you so much for these. You help me understand math WAY better then my schoolwork.

@JoAnnsSchool 2 года назад

Happy to help!

@mohamedabdibarre7094 Год назад

What is the sense in mentioning its oldness?????

@sabuba47913 Год назад

@@mohamedabdibarre7094 Well the teaching method is different or something, idk.

@mohamedabdibarre7094 Год назад

@@sabuba47913 means that?

@sabuba47913 Год назад

@@mohamedabdibarre7094 Uh probably. Why else would he mention the oldness of the video. Maybe the teacher in the video teaches a different way than our teachers want. You know teachers are picky and want a specific way of answering things. Maybe the teacher in the video's method is different.

@xminuteflow4207 6 лет назад

Thank you! You are the best math teacher!

@Meyerrrr 3 месяца назад

Great class teacher 👏

@carlosfernandez5343 23 дня назад

Thank you for your time

@skouloughli206 3 года назад

This is sooo helpful!

@nikitamohan3390 Год назад

Do you have classes for pre-calc and AP calculus AB and BC? I am planning to go back to college and was wondering if you would be willing to help with calculus 2 and linear algebra and discrete maths if possible? And thanks so much for these videos

@JoAnnsSchool Год назад

You're welcome! I'm a K-8th teacher who hasn't looked at calculus in over 40 years! I do recommend a channel called Zak's Lab though. 😀

@nikitamohan3390 Год назад

@@JoAnnsSchool oh cool sure. Thanks.

@alexandershapiro28 Год назад

This should be introduced along with the norm formula, to be derived from the 1 dimensional version to the n dimensional space.

@cyclop3873 3 года назад

Thank you !

@junghull3266 5 лет назад

Hi, your videos for geometry are really great. I love how you actually do it as you are teaching a class, and do a whole entire lesson on it. I was just curious which geometry book do you use?

@JoAnnsSchool 5 лет назад

Thank you for your kind words! 2012 copyright of Holt McDougal Geometry green cover.

@pikachuandsonicadventures8979 2 года назад

Let’s say that Y is between X and Z. XY = 7/4x - 9, YZ = 2.5x + 7, and XZ = 66. What are the numerical lengths of XY and YZ? Step 1: Apply the Segment Addition Postulate. XY + YZ = XZ Step 2: Substitute the given values for the variables. 7/4x - 9 + 2.5x + 7 = 66 Step 3: Combine the like terms. 4 1/4x - 2 = 66 Step 4: Add 2 to both sides, then divide both sides by 4 1/4 (multiply both sides by 4/17). x = 16 XY = 7/4(16) - 9 = 19 YZ = 2.5(16) + 7 = 47 19 + 47 = 66, so XY = 19, and YZ = 47.