Prerequisite Skills VOCABULARY CHECK

Slides:



Advertisements
Similar presentations
Area of Regular Polygons. We will determine the area of regular polygons using notes.
Advertisements

Congruence and Similarity
Chapter 1 test review Geometry.
Prerequisite Skills VOCABULARY CHECK ANSWER 24.5 in The area of the rectangle is ?. 2. The perimeter of the rectangle is ?. 3. The opposite of any.
Example 1 Explain how you could find the area of the regular hexagon shown.
Using Proportions to Solve Geometry Problems Section 6.3.
8.6:Perimeters and Areas of Similar Figures
Perimeter & Area Lessons 19 & 20.
VOCABULARY CHECK Prerequisite Skills Give the indicated measure for P. 1. The radius ANSWER 3 2. The diameter ANSWER 6 3. mADB ANSWER 290 °
Section 11-3 Perimeters and Areas of Similar Figures.
8.4 Areas of Regular Polygons “If I had to live my life again, I’d make the same mistakes, only sooner.” Tallulah Bankhead.
9-2 Area of Regular Polygons The center of a regular polygon is equidistant from its vertices. Radius- the distance from the center to a vertex. Apothem-
Areas of Regular Polygons Geometry Unit 4, Lesson 3.
11.4 Area of Regular Polygons
Geometry Chapter 11 Review. Solve for x Each exterior angle of a regular n-gon measures 40°. What is the value of n?
Similar Triangles Today’s objectives l Understand how the definition of similar polygons applies to triangles. l Recognize similar triangles. l Use the.
10/28/10 ©Evergreen Public Schools Area of Regular Polygons Vocabulary: apothem.
Solve the following proportions. a = 9 b = 7 c = 6 d = 6.
Perimeter and Area of Regular Polygons 9-2
Section 11-2 Areas of Regular Polygons. Area of an Equilateral Triangle The area of an equilateral triangle is one fourth the square of the length of.
Geometry 6.3 Big Idea: Use Similar Polygons
11.3 Perimeters and Area of Similar Figures
Chapter 10: Area Section 10-3: Areas of Regular Polygons.
Unit 6 Part 1 Using Proportions, Similar Polygons, and Ratios.
Chapter 7 Quiz Review Lessons
Review.
Geometry/Trig 2Name __________________________ Section 11-4 NotesDate _______________ Block ______ Regular Polygon:______________________________ _____________________________.
Area of regular polygons
SIMILAR AND CONGRUENT POLYGONS LESSON 35POWER UP GPAGE 229.
8.3 Similar Polygons. Similar Polygons Definition : Similar polygons have congruent angles and sides in the same ratio (called Scale factor). Write the.
10.3 and 10.5 Areas of Regular Polygons & Trigonometry and Area.
Geometry/TrigName: __________________________ Ratio of Perimeters & Areas ExplorationDate: ___________________________ Recall – Similar Figures are figures.
Area of Regular Polygons January 27, Objectives Learn the formula for the area of regular polygons.
Geometry 11.6 Big Idea: Find Areas of Regular Polygons
CHAPTER 11.1 Angle Measures in Polygons. Sum of the Measures of the Interior Angles of a Convex Polygon… (n-2) * 180.
7-2 Similar Polygons Objectives Students will be able to:
 Two polygons are similar polygons if corresponding angles are congruent and if the lengths of corresponding sides are proportional.
Prerequisite Skills VOCABULARY CHECK Copy and complete the statement. ANSWER 8 5 3x, 7x 1. In the expression 3x x, and are like terms. ?? 2. The.
Prerequisite Skills VOCABULARY CHECK Copy and complete the statement. 1.  1 and ? are vertical angles. ANSWER 4  2.  3 and ? are consecutive.
Similar Polygons NOTES 8.1 Goals 1)Use Similarity Statements 2)Find corresponding lengths in similar polygons 3)Find perimeters & areas of similar polygons.
Area of Regular Polygons Terms Radius – segment joining the center of the polygon to the vertex of the polygon. All radii of a polygon are equal. When.
Area of Regular Polygons Regular – congruent sides and angles.
Holt Geometry 9-2 Developing Formulas for Circles and Regular Polygons Warm Up Find the unknown side lengths in each special right triangle. 1. a 30°-60°-90°
Holt Geometry 9-2 Developing Formulas for Circles and Regular Polygons 9-2 Developing Formulas for Circles and Regular Polygons Holt Geometry Warm Up Warm.
Regular Polygons In this square the apothem is 5 cm. What is the perimeter of this square? If the apothem in this square is 8 in., What is the perimeter.
Prerequisite Skills VOCABULARY CHECK Copy and complete the statement.
Similarity Postulates
7.1 Proportions Solving proportions
Similar Polygons.
Objectives: To identify similar polygons To apply similar polygons
Polygons Similar and Congruent
Prerequisite Skills VOCABULARY CHECK Copy and complete the statement.
6.3 Use Similar Polygons.
Prerequisite Skills VOCABULARY CHECK Give the indicated measure for P.
Aim: How are triangles congruent?
12-5: Area and Volumes of Similar Solids
All the polygons in this game are regular polygons.
Chapter 2 Similarity and Dilations
7-3 Similar Triangles.
LESSON 7.5 AREAS OF REGULAR POLYGONS OBJECTIVE:
11.3 Perimeters and Area of Similar Figures
11.3 Perimeters and Area of Similar Figures
Areas of Regular Polygons
7.7 Perimeters and Area of Similar Figures
Lesson 44 Applying Similarity.
Prerequisite Skills VOCABULARY CHECK 1.
Warm Up Find the unknown side lengths in each special right triangle.

Prerequisite Skills VOCABULARY CHECK Copy and complete the statement.
Area of Regular Polygons and Circles
Presentation transcript:

Prerequisite Skills VOCABULARY CHECK 1. Copy and complete: The area of a regular polygon is given by the formula A = ? . ANSWER A = a P, where a is the apothem and P is the perimeter, 1 2 A = a ns, where n is the number of sides and s is the side length or

Prerequisite Skills VOCABULARY CHECK 2. Explain what it means for two polygons to be similar. ANSWER Two polygons are similar if corresponding angles are congruent and corresponding side lengths are proportional.

Prerequisite Skills SKILLS AND ALGEBRA CHECK Use trigonometry to find the value of x. 3. ANSWER About 14.0

Prerequisite Skills SKILLS AND ALGEBRA CHECK 4. ANSWER About 14.6

Prerequisite Skills SKILLS AND ALGEBRA CHECK 5. ANSWER About 23.0

Prerequisite Skills SKILLS AND ALGEBRA CHECK Find the circumference and area of the circle with the given dimension. 6. r = 2 m ANSWER 12.6 m, 12.6 m2 7. d = 3 in. ANSWER 9.42 in., 7.07 in.2

Prerequisite Skills SKILLS AND ALGEBRA CHECK 8. r = 2 √5 cm ANSWER 28.1 cm, 62.8 cm2