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Presentation transcript:

Concept

Find Measures of Central Angles Find the value of x. Example 1

The sum of the measures of Find Measures of Central Angles The sum of the measures of Substitution Simplify. Add 2 to each side. Divide each side by 26. Answer: x = 7 Example 1

Find the value of x. A. 9 B. 10 C. 11 D. 65 Example 1

Concept

Classify Arcs and Find Arc Measures Answer: Example 2

Classify Arcs and Find Arc Measures Example 2

Classify Arcs and Find Arc Measures Answer: Example 2

Classify Arcs and Find Arc Measures Answer: Example 2

Concept

mLPK = 0.21(360) Find 21% of 360. = 75.6 Simplify. Answer: Find Arc Measures in Circle Graphs mLPK = 0.21(360) Find 21% of 360. = 75.6 Simplify. Answer: Example 3

Find Arc Measures in Circle Graphs Example 3

Sum of arcs in a circle is 360. Find Arc Measures in Circle Graphs Sum of arcs in a circle is 360. Substitution Simplify. Simplify. Answer: Example 3

Concept

Use Arc Addition to Find Measures of Arcs . Example 4

Arc Addition Postulate Use Arc Addition to Find Measures of Arcs Arc Addition Postulate = 58 + 32 Substitution = 90 Answer: Example 4

Use Arc Addition to Find Measures of Arcs Example 4

Arc Addition Postulate Use Arc Addition to Find Measures of Arcs Arc Addition Postulate = mIMJ + mJMK = 90 + 58 Substitution = 148 Answer: Example 4

Concept

Arc Length Equation Substitution cm Use a calculator. Answer: Find Arc Length Arc Length Equation Substitution Use a calculator. cm Answer: Example 5

Arc Length Equation Substitution Use a calculator. Answer: Find Arc Length Arc Length Equation Substitution Use a calculator. Answer: Example 5

Arc Length Equation Substitution Use a calculator. Answer: Find Arc Length Arc Length Equation Substitution Use a calculator. Answer: Example 5