Presentation is loading. Please wait.

Presentation is loading. Please wait.

Main Idea/Vocabulary vertical angles complementary angles supplementary angles perpendicular lines parallel lines transversal Identify special pairs of.

Similar presentations


Presentation on theme: "Main Idea/Vocabulary vertical angles complementary angles supplementary angles perpendicular lines parallel lines transversal Identify special pairs of."— Presentation transcript:

1 Main Idea/Vocabulary vertical angles complementary angles supplementary angles perpendicular lines parallel lines transversal Identify special pairs of angles and relationships of angles formed by two parallel lines cut by a transversal. interior angles exterior angles alternate interior angles alternate exterior angles corresponding angles

2 KC 1

3 Example 1 Find a Missing Angle Measure The two angles below are supplementary. Find the value of x x = 180 Write an equation. Answer: 25 Subtract 155 from each side. Simplify. =

4 1.A 2.B 3.C 4.D Example 1 A.35B.40 C.45D.50 The two angles below are complementary. Find the value of x.

5 Example 2 Find a Missing Angle Measure Use the two vertical angles to solve for x. Answer: x = 90Write an equation. Find the value of x in the figure. – 68 =– 68Subtract 68 from each side. x = 22Simplify.

6 1.A 2.B 3.C 4.D Example 2 A.20B.25 C.30D.70 Find the value of x in the figure.

7 KC 2

8 Example 3 BRIDGES The drawing shows a simple bridge design. The top beam and the floor of the bridge are parallel. If  2   3 and m  3 = 55 , classify the relationship between  1 and  5. Then find m  1 and m  5. Since  3 and  5 are alternate interior angles, they are congruent. Also, since  1 and  2 are supplementary,  1 and  3 are supplementary, and  1 and  5 are supplementary. Find an Angle Measure

9 Example 3 Since m  3 = 55  and  2   3, m  2 = 55 . Answer: They are supplementary; m  1 = 125° and m  5 = 55°. Find an Angle Measure Since  3 and  5 are alternate interior angles, m  5 = 55 . Since  1 and  2 are supplementary, the sum of their measures is 180 . Therefore, m  1 = 180  − 55  or 125 .

10 1.A 2.B 3.C 4.D Example 3 A.85°B.95° C.100°D.105° BRIDGES The sketch below shows a simple bridge design. The top beam and floor of the bridge are parallel. If m  1 = 45° and m  3 = 40°, find m  4.

11 1.A 2.B 3.C 4.D Five Minute Check 1 A.0.035% B.0.35% C.3.5% D.35% Write 7 out of 20 as a percent. (over Chapter 5)

12 1.A 2.B 3.C 4.D Five Minute Check 2 Express 48% as a fraction in simplest form. (over Chapter 5) A. B. C. D.

13 1.A 2.B 3.C 4.D Five Minute Check 3 A.1 B.9 C.10 D is 95% of what number? (over Chapter 5)

14 1.A 2.B 3.C 4.D Five Minute Check 4 A.20%; decrease B.20%; increase C.16.7%; decrease D.16.7%; increase Find the percent of change from 15 to 18. State whether the percent of change is an increase or a decrease. (over Chapter 5)

15 1.A 2.B 3.C 4.D Five Minute Check 5 A.$11.70/pound B.$3/pound C.$2.70/pound D.$1.17/pound A grocery store manager prices items 30% above their cost. If the manager pays $0.90 per pound for strawberries, what price will he put on the strawberries? (over Chapter 5)

16 1.A 2.B 3.C 4.D Five Minute Check 6 A.$19.74 B.$20.20 C.$ D.$ Susan deposited $210 to open a savings account that pays 4.7% simple interest annually. If there are no other deposits or withdrawals from the account, how much will be in the account in 24 months? (over Chapter 5)

17 End of Custom Shows


Download ppt "Main Idea/Vocabulary vertical angles complementary angles supplementary angles perpendicular lines parallel lines transversal Identify special pairs of."

Similar presentations


Ads by Google