Mat_3r_UD1_Presentation
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Two lines are parallel if they never meet and are always the same distance apart. A straight line extends infinitely in both directions without curving, while a ray has a starting point but no end. A line segment connects two points and has definite endpoints, and two lines intersect when they meet at a point to form four angles, including being perpendicular when they meet at a right angle.
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This document discusses various geometry concepts related to angles and lines including:
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here is a ppt of lines and angles class 9th
you can watch it and please comment on it
thanxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
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- Point: a location in space represented by a dot
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here is a ppt of lines and angles class 9th
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This document defines angles and describes how to measure, construct, classify, and bisect angles. It contains the following key points:
1. An angle is the amount of turn between two lines that meet at a common endpoint called the vertex. Angles are measured in degrees using a protractor.
2. To construct a 45 degree angle, mark the 45 degree mark on a protractor and draw a line from the vertex to this mark.
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- 1. Unit 1 LINESby MariaAdrover CEIPCALONGE Geometry 3rd _ Unit 1_Lines
- 2. STRAIGHT LINE A straight line is a line that does not curve. A line extends in both directions without end (infinitely)
- 3. RAY A ray is a line with a start but without an end. The point that starts a half-line is called origin.
- 4. SEGMENT LINE A line segment is the part of a line connecting two points. It has definite end points.
- 5. PARALLEL LINES Two lines are parallel if they never meet. They are always the same distance apart
- 6. INTERSECTING LINES Two lines are intersecting if they meet in a point and form 4 angles.
- 7. PERPENDICULAR LINES If the lines make 4 right angles (90º) when they meet in a point, then they are perpendiculars.