By McGraw-Hill Education

Funded by means of the nationwide technology beginning, *Core-Plus Mathematics* is a four-year, international-like highschool arithmetic application that aligns good with the typical center country criteria for arithmetic, together with the criteria of Mathematical Practice.

Each path positive aspects coherent, hooked up devices that boost pupil figuring out and abilities in algebra and features, geometry and trigonometry, facts and likelihood, and discrete mathematics.

The sequence builds at the subject matter of *mathematics as sense-making*. via problem-based investigations that includes practical contexts, scholars increase a wealthy and hooked up figuring out of vital arithmetic that is smart to them.

- This new second version contains a colourful lesson design
- Earlier improvement of algebraic topics
- Expanded use of technology
- Pre-requisite abilities evaluate in each lesson
- Unit source Masters
- A full-volume scholar variation on hand in print, CD-ROM, and on-line formats.

**Read or Download Core-Plus Mathematics - Contemporary Mathematics In Context, Course 3 PDF**

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**Additional resources for Core-Plus Mathematics - Contemporary Mathematics In Context, Course 3**

**Example text**

How do you think the software determines the parallel line? 40 UNIT 1 • Reasoning and Proof On Your Own 3 Use the diagram below with separate assumptions for Part a and Part b. q p n 5 4 6 2 1 7 8 11 m 10 9 3 a. Assume m, p q, m∠2 = 40°, and m∠3 = 35°. i. Find m∠8. ii. Find m∠10. iii. Find m∠4. iv. Find m∠7. b. Do not assume any of the given lines are parallel. For each of the given conditions, which lines, if any, can you conclude are parallel? i. m∠2 = m∠8 iii. m∠1 = m∠10 4 ii. m∠6 = m∠1 iv. m∠2 = m∠7 The photo below shows a carpenter’s bevel, which is used to draw parallel lines.

Check your prediction with a drawing. d. Write a conjecture relating the number of edges E and the sum S of the degrees of the vertices. e. Write your conjecture in if-then form. f. Can you be absolutely positive that your conjecture is true for all possible vertex-edge graphs with no loops? Explain. LESSON 1 • Reasoning Strategies 13 Inductive reasoning may lead to an if-then statement that is plausible, or seems true. However, as you saw in Problem 5, the statement may not be true for all cases.

Label the corresponding lines m and n . Slide the top copy so that line m is a continuation of line m. c. Why are the two marked angles congruent? m n m d. How is the pair of marked angles related to the two lines n and n and transversal m? How do lines n and n appear to be related? Check if those relationships hold when you slide the top copy to other positions, keeping line m as a continuation of line m. e. Write a conjecture in if-then form that generalizes the observations you made in the experiment.