ANGLE RELATIONSHIPS WITH PARALLEL LINES WORKSHEET

Find the angle x in the figure given below. Give your reason.

Problem 1 :

Solution

Problem 2 :

Solution

Problem 3 :

Solution

Problem 4 :

Solution

Problem 5 :

Solution

Problem 6 :

Solution

Problem 7 :

(a) Which angle is corresponding to angle c?

(b) Which angle is alternate to angle d?

(c) Which angle is corresponding to angle h?

(d) Which angle is vertically opposite to angle a?

(e) Which angle is alternate to angle e?

(f) Which angle is co-interior with angle c?

(g) Which angle is vertically opposite to angle h?

(h) Which angle is co-interior with angle e?

(i) Which angle is corresponding to angle a?

(j) Which angle is vertically opposite to angle g?

Solution

Problem 8 :

Find the value of the variable(s) in each figure. Explain your reasoning.

Solution

Problem 9 :

Find the value of the variable(s) in each figure. Explain your reasoning.

Solution

Problem 10 :

(Using a 3rd parallel Line – Auxilury Line)

Solution

Answers

1) x = 125

2)  x = 57

3) x = 30 and y = 150

4) x = 81, y = 81 and z = 99

5)  x = 106 and y = 106

6)  x = 123 and y = 70

7)  

(a) Corresponding angle of c is f.

(b) ∠d and ∠f are alternate angles.

(c) The corresponding angle of h is d.

(d) Vertically opposite to a is c.

(e) Alternate angle of e is c.

(f) The co-interior c is f.

(g) Vertically opposite to h is f.

(h) Co-interior angle with ∠e is d.

(i) Corresponding to a is e.

(j) Vertically opposite to g is e.

8)  x = 6 and y = 24

9) x = 30, y = 15 and z = 150

10) x = 130

For each set of angles name the angle pair and find the missing measurements.

Problem 1 :

finding-the-angle-q1png

Type of angle pair ______

These angles are ______

So, x = _____

Solution

Problem 2 :

finding-the-angle-q2.png

Type of angle pair _____

These angles angles are ____

So, x = ____

Solution

Problem 3 :

finding-the-angle-q3.png

Type of angle pair _____

These angles are _____

So, x = ___

Solution

Problem 4 :

finding-the-angle-q4.png

Type of angle pair ____

These angles are _____

So, x = ____

Solution

Problem 5 :

finding-the-angle-q5.png

Type of angle pair ____

These angles are _____

So, x = ___

Solution

Problem 6 :

finding-the-angle-q6.png

Type of angle pair _____

These angles are ____

So, x = ____

Solution

Problem 7 :

finding-the-angle-q7.png

Type of angle pair _____

These angles are ____

So, x = ____

Solution

Problem 8 :

finding-the-angle-q8.png

Type of angle pair _____

These angles are ____

So, x = ____

Solution

For each set of angles name the angle pair, write the equation, solve the equation for x, and plug in x to find the missing angle measurements.

Problem 9 :

finding-the-angle-measurement-q1.png

Type of angle pair ____

These angles are ____

Equation ____

x = ____

Angle Measurements = ____

Solution

Problem 10 :

finding-the-angle-measurement-q2.png

Type of angle pair ____

These angles are ____

Equation ____

x = ____

Angle Measurements = ____

Solution

Problem 11 :

finding-the-angle-measurement-q3.png

Type of angle pair ____

These angles are ____

Equation ____

x = ____

Angle Measurements = ____

Solution

Problem 12 :

finding-the-angle-measurement-q4.png

Type of angle pair ____

These angles are ____

Equation ____

x = ____

Angle Measurements = ___

Solution

Problem 13 :

Solve for n.

parallel-lines-and-transversalq1

Solution

Problem 14 :

Solve for x.

parallel-lines-and-transversalq2.png

Solution

Problem 15 :

Find the value of x. Show your steps.

parallel-lines-ang-transversal-q10.png

Problem 16 :

Teh figure shows a two dimensional representation of a bird made out of origami paper. Find <1 and <2. Explain your reasoning.

parallel-lines-ang-transversal-q11.png

Asnwers

1)

Type of angle pair Corresponding

These angles are Congruent

So, x = 68°

2)

Type of angle pair Same-Side Interior

These angles angles are Supplementary

So, x = 46°

3)  

Type of angle pair Vertical

These angles are Congruent

So, x = 120°

4)

Type of angle pair Alternate Interior

These angles are Congruent

So, x = 101°

5) 

Type of angle pair Same-Side Exterior

These angles are Supplementary

So, x = 103°

6)

Type of angle pair Alternate Interior 

These angles are Congruent

So, x = 106°

7)

Type of angle pair Same-Side Interior

These angles are Supplementary

So, x = 106°

8)  

Type of angle pair Alternate Interior

These angles are Congruent

So, x = 142°

9)

Type of angle pair Same-Side Interior

These angles are Supplementary

Equation 3x + 6x = 180

9x = 180

x = 20

Angle Measurements = 60° & 120°

10)

Type of angle pair Alternate Exterior

These angles are Congruent

Equation 7x - 12 = 3x + 28

7x - 3x = 28 + 12

4x = 40

x = 10

Angle Measurements = 58° & 58°

11) 

Type of angle pair Same-Side Exterior

These angles are Supplementary

Equation 3x + 77 + 4x + 54 = 180

7x + 131 = 180

7x = 49

x = 7

Angle Measurements = 98° & 82°

12)

Type of angle pair Corresponding

These angles are Congruent

Equation 9x + 8 = 4x + 18

9x - 4x = 18 - 8

5x = 10

x = 2

Angle Measurements = 26° & 26°

13) n = 44

14) x = 12

15)  x + 12 and 110 are alternate exterior angles. They will be equal, the value of x is 98.

16) <1 = 110 and <2 = 70

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