Splash Screen. Over Lesson 1–3 5-Minute Check 1 A.2 B.4 C.6 D.8 Use the number line to find the...

Over Lesson 1–3

A. 2

B. 4

C. 6

D. 8

Use the number line to find the measure of AC.

Over Lesson 1–3

A. 3

B. 5

C. 7

D. 9

Use the number line to find the measure of DE.

Over Lesson 1–3

A. D

B. E

C. F

D. H

Use the number line to find the midpoint of EG.

Over Lesson 1–3

A. 12

B. 10

C. 5

D. 1

Find the distance between P(–2, 5) and Q(4, –3).

Over Lesson 1–3

A. (–8, 20)

B. (–4, 15)

C. (–2, –5)

D. (2, 20)

Find the coordinates of R if M(–4, 5) is the midpoint of RS and S has coordinates (0, –10).

Over Lesson 1–3

A. Location A, 10 units

B. Location A, 12.5 units

C. Location B, 10 units

D. Location B, 12.5 units

A boat located at (4, 1) can dock at two locations. Location A is at (–2, 9) and Location B is at (9, –11). Which location is closest? How many units away is the closest dock?

You measured line segments.

• Measure and classify angles.

• Identify and use congruent angles and the bisector of an angle.

• ray

• opposite rays

• angle

• side

• vertex

• interior

• exterior

• degree

• right angle

• acute angle

• obtuse angle

• angle bisector

Angles and Their Parts

A. Name all angles that have B as a vertex.

Answer:


Answer:

B. Name the sides of ∠5.


C.

A.

A.

B.

C.

D.

B.

A.

B.

C.

D. none of these

A.

B.

C.

D.

C. Which of the following is another name for 3?∠

Measure and Classify Angles

A. Measure angle TYV and classify it as right, acute, or obtuse.

Answer:


A. Measure angle TYV and classify it as right, acute, or obtuse.

Answer: m∠TYV = 90, so ∠TYV is a right angle.


Answer:


Answer: 180 > ∠WYT > 90, so ∠WYT is an obtuse angle.

A. 30°, acute

B. 30°, obtuse

C. 150°, acute

D. 150°, obtuse

A. Measure ∠CZD and classify it as right, acute, or obtuse.

A. 60°, acute

B. 90°, acute

C. 90°, right

D. 90°, obtuse

B. Measure ∠CZE and classify it as right, acute, or obtuse.

A. 30°, acute

B. 30°, obtuse

C. 150°, acute

D. 150°, obtuse

C. Measure ∠DZX and classify it as right, acute, or obtuse.


INTERIOR DESIGN Wall stickers of standard shapes are often used to provide a stimulating environment for a young child’s room. A five-pointed star sticker is shown with vertices labeled. Find m∠GBH and m∠HCI if ∠GBH = ∠HCI, m∠GBH = 2x + 5, and m∠HCI = 3x – 10.


∠GBH = ∠HCI Given

m∠GBH = m∠HCI Definition of congruent angles

2x + 5 = 3x – 10 Substitution

2x + 15 = 3x Add 10 to each side.

15 = x Subtract 2x from each side.

Step 1 Solve for x.


Step 2 Use the value of x to find the measure of either angle.

.

Answer:


Step 2 Use the value of x to find the measure of either angle.

.

Answer: m∠GBH = 35, m∠HCI = 35

A. m∠BHC = 105, m∠DJE = 105

B. m∠BHC = 35, m∠DJE = 35

C. m∠BHC = 35, m∠DJE = 105

D. m∠BHC = 105, m∠DJE = 35

Find m∠BHC and m∠DJE if ∠BHC = ∠DJE, m∠BHC = 4x + 5, and m∠DJE = 3x + 30.

Splash Screen. Over Lesson 1–3 5-Minute Check 1 A.2 B.4 C.6 D.8 Use the number line to find the...

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Transcript of Splash Screen. Over Lesson 1–3 5-Minute Check 1 A.2 B.4 C.6 D.8 Use the number line to find the...