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grade 7 angle measurement using protractor.pptx
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- 3. OBJECTIVES: 1.Identify the partsof an angle; 2.Illustrate the different kinds of angle: acute, right and obtuse; and 3.Determine the measure an angle using a protractor.
- 4. • The measureof an angle is the smallest amount of rotation about the vertex from one ray to the other. • DEGREE(°) is the unit of measure of an angle and the tool used to measure a given angle is PROTRACTOR. ANGLE MEASUREMENT C A B 40° The measure of ABC is 40. It can be written as:
- 5. • To measurean angle or to find the number of degrees in an angle, we must follow these steps: ANGLE MEASUREMENT Step 1: Place the center of the protractor of the vertex of the angle. Step 2. Place the straight edge of the protractor along one side of the angle. Step 3. The other side of the angle needs to cross the numbered part of the protractor. Step 4: The size of the angle can be read of the scale.
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- 8. ANGLE MEASUREMENT • Determinethe measurement of the given angle and identify its kind.
- 9. • Determine themeasurement of the given angle and identify its kind. ANGLE MEASUREMENT Acute Angle 𝑚∠ 𝐴𝐵𝐶=80
- 10. ANGLE MEASUREMENT • Determinethe measurement of the given angle and identify its kind.
- 11. • Determine themeasurement of the given angle and identify its kind. ANGLE MEASUREMENT Acute Angle 𝑚∠ 𝐴𝐵𝐶=53
- 12. ANGLE MEASUREMENT • Determinethe measurement of the given angle and identify its kind.
- 13. • Determine themeasurement of the given angle and identify its kind. ANGLE MEASUREMENT Right Angle 𝑚∠ 𝐴𝐵𝐶=90
- 14. ANGLE MEASUREMENT • Determinethe measurement of the given angle and identify its kind.
- 15. • Determine themeasurement of the given angle and identify its kind. ANGLE MEASUREMENT Obtuse Angle 𝑚∠ 𝐴𝐵𝐶=111
- 16. • Determine themeasurement of the given angle and identify its kind. ANGLE MEASUREMENT Obtuse Angle 𝑚∠ 𝐴𝐵𝐶=95