Splash Screen

Chapter 6Lesson 6-4

A. AB. BC. CD. D

A. x = 120

B. x = 90

C. x = 60

D. x = 30

(over Lesson 6-1)

Find the value of x in the figure.

1. A2. B3. C4. D

(over Lesson 6-1)

What is another name for line q?

A.

B.

C.

D.

A. AB. BC. CD. D

A. 720°

B. 540°

C. 900°

D. 1080°

Find the sum of the interior angle measures of a hexagon.

(over Lesson 6-3)

1. A2. B3. C4. D

A. 900°

B. 1080°

C. 1260°

D. 1620°

Find the sum of the interior angle measures of a nonagon.

(over Lesson 6-3)

• congruent polygon

• Identify congruent polygons.

Standard 7MG3.4 Demonstrate an understanding of conditions that indicate two geometrical figures are congruent and what congruence means about the relationships between the sides and angles of the two figures.

Identify Congruent Polygons

Determine whether the trapezoids shown are congruent. If so, name the corresponding parts and write a congruence statement.

Identify Congruent Polygons

Answer: Since all pairs of corresponding angles and sides are congruent, the two trapezoids are congruent. One congruence statement is trapezoid EFGH ≅ trapezoid QRST.

Find Missing Measures

Answer: Since m <H = 35°, m <S = 35°.

According to the congruence statement, >H and <S are corresponding angles. So,

Answer: Since FG = 6 centimeters, QR = 6 centimeters.

In the figure,

A. AB. BC. CD. D

If the triangles shown are congruent, which of the following statements is false.

A. B.

C. D.

1. A2. B3. C4. DA. 50° B. 55°

C. 70° D. 75°

In the figure,

1. A2. B3. C4. D

A. 3 in. B. 4 in.

C. 5 in. D. 6 in.

In the figures,

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