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**Investigating Angles Drawing an Angle**

Geometry Investigating Angles Drawing an Angle

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**Angles An angle consists of a vertex and two arms.**

This angle is named XYZ or ZYX X arm vertex angle Y Z arm

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Drawing Angles

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**Drawing Angles Example: Draw an angle DEF with a measure of 65°**

Step 1: To draw an angle, start with one arm of the angle. Example: Draw an angle DEF with a measure of 65° E F

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**Drawing Angles Example: Draw an angle DEF with a measure of 65° F E**

Step 2: Place a protractor on top, with the vertex and base aligning with the vertex and arm of the angle. Drawing Angles Example: Draw an angle DEF with a measure of 65° E F

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**Drawing Angles Example: Draw an angle DEF with a measure of 65°**

Step 3: Place a mark at 65° on the edge of the protractor. Drawing Angles Example: Draw an angle DEF with a measure of 65° E F

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**Drawing Angles Example: Draw an angle DEF with a measure of 65°**

Step 4: Remove protractor and draw arm from vertex (E). Label as arm D. Drawing Angles Example: Draw an angle DEF with a measure of 65° D 65° E F

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**Drawing Angles Example: Draw an angle RST with a measure of 123°**

Step 1: To draw an angle, start with one arm of the angle. Example: Draw an angle RST with a measure of 123° R S

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**Drawing Angles Example: Draw an angle RST with a measure of 123° R S**

Step 2: Place a protractor on top, with the vertex and base aligning with the vertex and arm of the angle. Drawing Angles Example: Draw an angle RST with a measure of 123° R S

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**Drawing Angles Example: Draw an angle RST with a measure of 123°**

Step 3: Place a mark at 123° on the edge of the protractor. Drawing Angles Example: Draw an angle RST with a measure of 123° R S

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**Drawing Angles Example: Draw an angle RST with a measure of 123°**

Step 4: Remove protractor and draw arm from vertex (S). Label as arm T. Drawing Angles Example: Draw an angle RST with a measure of 123° T R 123° S

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(And Introduction to Measuring Angles)

(And Introduction to Measuring Angles)

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