Grades

Kindergarten

1st

2nd

3rd

4th

5th

6th

7th

8th

9th

10th

11th

12th

Higher Ed

Adult Ed

Other

Subjects

ELA

Math

Science

Social Studies

Art

Computer Science

French

German

Music

Physical Education

Spanish

Other

Private Library

Team Premium

*check*Rating- Date

Geometry 3-5 Parallel Lines and Triangles

| 25 Questions

Note from the author:

A complete formative lesson with embedded slideshow, mini lecture screencasts, checks for understanding, practice items, mixed review, and reflection. I create these assignments to supplement each lesson of Pearson's Common Core Edition Algebra 1, Algebra 2, and Geometry courses. See also mathquest.net and twitter.com/mathquestEDU.

1

30 pts

Solve It! Take and embed pictures on the canvas to document your progress after each step.

1. Draw and cut out a large triangle.

2. Tear off all three corners of the triangle.

3. Place the three corner pieces (that you tore off) so that they form adjacent angles.

2

10 pts

Solve It! What is the sum of the meaures of the three angles of your triangle?

Enter only a number.

3

10 pts

Analysis: Do all triangles have the same interior angle sum? How does the Solve It! activity support your answer?

zoom in

4

10 pts

Problem 1 Got It?

A

B

C

D

5

10 pts

Vocabulary: Define remote interior angles in your own words.

6

10 pts

Problem 2 Got It? Two angles of a triangle measure 53. What is the measure of an exterior angle at each vertex of the triangle?

53, 53, 74

74, 74, 106

106, 127, 127

127, 127, 127

zoom in

7

10 pts

Problem 3 Got It? In Problem 3, can you find m∠A without using the Triangle Exterior Angle Theorem?

Yes

No

zoom in

9

10 pts

A

B

C

D

zoom in

10

10 pts

A

B

C

D

zoom in

11

10 pts

A

B

C

D

zoom in

12

10 pts

A

B

C

D

zoom in

13

10 pts

A

B

C

D

zoom in

14

10 pts

A

B

C

D

15

10 pts

Reasoning: Explain how the Triangle Exterior Angle Theorem makes sense based on the Triangle Angle-Sum Theorem.

zoom in

16

10 pts

Error Analysis: The measures of the interior angles of a triangle are 30, x, and 3x. Which of these methods for solving for x is incorrect?

A

B

zoom in

18

5 pts

Review Lesson 3-4: If ∠1 and ∠2 are supplementary, what can you conclude about lines a and c?

They are perpendicular.

They are parallel.

They are neither parallel nor perpendicular.

19

10 pts

Review Lesson 3-4: ∠ABC and ∠CBD form a linear pair. If m∠ABC = 3x + 20 and m∠CBD = x + 32, find the value of x. Enter only a number.

20

10 pts

Review Lesson 3-4: ∠1 and ∠2 are supplementary. If ∠1 ≅ ∠2, find m∠1 and m∠2. Enter only a number.

21

10 pts

Use Your Vocabulary: Classify each statement as true or false.

- TrueAnswer by dragging items here
- FalseAnswer by dragging items here

zoom in

22

5 pts

0

1

2

infinitely many

23

5 pts

Enter only a number.

24

5 pts

Enter only a number.

25

10 pts

Reflection: Math Success

Add to my formatives list