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# Bell Work - PowerPoint PPT Presentation

Bell Work. Which angles and D as their vertex? Give two other names for <ABD. Does <BDC appear to be acute, right, obtuse, or straight? Find the value of x and m<ABD if m<ABC = 71, m<DBC = 2x – 3, and m<ABD = 3x + 4.

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### Bell Work

Which angles and D as their vertex?

Give two other names for <ABD.

Does <BDC appear to be acute, right, obtuse, or straight?

Find the value of x and m<ABD if m<ABC = 71, m<DBC = 2x – 3, and m<ABD = 3x + 4.

Suppose MN bisects <RMQ, m<RMN = x + 2, and m<NMQ = 2x – 3. Find the value of x and m<RMQ.

G

B

1

2

A

3

D

C

• Read pages 53 – 55 and define the following terms:

• Perpendicular lines

• Vertical angles

• Linear pair

• Supplementary angles

• Complementary angles

• When two lines intersect, they form four angles, but not always right angles.

• Perpendicular lines are special intersecting lines that form four right angles.

• Pg. 54 Angle Relationships

• In the figure, GH and JK intersect at I. Find the value of x and the measure of <JIH.

G

J

16x - 20

I

13x + 7

H

K

• Supplementary angles are two angles whose measures add up to 180°. These are not necessarily a linear pair, but can be.

• Complementary angles are two angles whose measures add up to 90°. These are not necessarily adjacent angles, but can be.

• The measure of the supplement of an angle is 60 less than three times the measure of the complement of the angle. Find the measure of the angle.

• Pg. 58 # 6 – 14

• Pg. 59 # 15 – 33

• Pg. 61 – 64 # 1 – 42