Lessons 3-4 and 3-5 Lesson Slides: 12 Slides (10th Grade)

12 Slides • 15 Questions

1

Lesson 3-4 to 3-5

Parallel and Perpendicular

Lines

Parallel Lines and Triangles

Objective: (1) SW relate parallel and perpendicular lines

(2) SW use parallel lines to prove a theorem about triangles.

(3) SW ﬁnd measures of angles of triangles.

2

Essential UnderstandingYou can use the
relationships of two lines to a third line to decide
whether the two lines are parallel or perpendicular to
each other.

3

4

5

6

7

An auxiliary line is a line that you
add to a diagram to help explain
relationships in proofs.

8

9

Fill in the Blanks

Find m∠1.

10

Fill in the Blanks

Find m∠1.

11

Fill in the Blanks

Find m∠1.

12

Drag and Drop

Find the value of each variable.

x =

y =

z =

Drag these tiles and drop them in the correct blank above

70

110

30

100

50

40

60

13

Dropdown

Find the value of each variable.

x =

y =

14

Fill in the Blanks

Find the measure of the exterior angle shown.

Answer:

15

Dropdown

Find the value of x.

x =

16

Fill in the Blanks

Find the value of x.

Answer:

17

Fill in the Blanks

Find the value of x.

x =

18

Fill in the Blanks

Find the value of x.

x =

19

Fill in the Blanks

Find the value of c.

c =

20

Dropdown

Find m∠1.

m∠1 =

21

Dropdown

Find m∠2.

m∠2 =

22

Dropdown

x =

m∠P =

m∠Q =

m∠R =

23

Dropdown

Find the value of x and the measures of the angles.

x =

m∠A =

m∠B =

24

Find the measure of each angle.

a = ______ d = _____

b = ______

e = _____

c = ______

25

Find the measure of each angle.

x = ______

y = ______

z = ______

26

The End

27

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Lesson 3-4 to 3-5

Parallel and Perpendicular

Lines

Parallel Lines and Triangles

Objective: (1) SW relate parallel and perpendicular lines

(2) SW use parallel lines to prove a theorem about triangles.

(3) SW ﬁnd measures of angles of triangles.

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