What is a real world example of a line? Real-world examples of line segments are a pencil, a baseball bat, the cord to your cell phone charger, the edge of a table, etc. Think of a real-life quadrilateral, like a chessboard; it is made of four line segments.

The dashed line often represents something that is in a temporary or transitional state. In this context, it is used as a placeholder, indicating there is more to come.

A dotted line indicates architectural details within interior space, such as a tray or coffered ceiling; they may be called out in writing on the plan, too. A narrow rectangle composed with dotted lines typically indicates a beam in the ceiling. Black circles or squares stand for columns.

Dashed thin line. Used for hidden outlines and edges. Chain thin. Chain thin double dash Used for centre lines, lines of symmetry.

Terms in this set (12)

• Object lines. shows the contour or outline of objects.
• Hidden lines. represents features that are hidden in current view.
• Centerlines. locates the center of circles and arcs.
• Extension lines. show the extinct of a dimension.
• Dimension lines.
• Leader lines.
• Cutting-plane lines.
• Viewing-plane lanes.

A diagonal is made out of a straight line that’s set at an angle instead of straight up or across. If you picture a square and draw a line connecting the opposite corners, that’s a diagonal line. You’ll find diagonal lines in geometry, and also in the world around you.

Straight line basis is a method of calculating depreciation and amortization, the process of expensing an asset over a longer period of time than when it was purchased. It is calculated by dividing the difference between an asset’s cost and its expected salvage value by the number of years it is expected to be used.

In Maths, a straight angle is an angle equal to 180 degrees. It is called straight because it appears as a straight line. Basically, as per angles definition in maths, when two rays are joined end to end, they form an angle.

180 degree means it’s a straight line, and so does 0 degrees.

When the arm is West- East (pivot – tip of arm), it is termed 0 degrees and when it is East-West (pivot – tip of arm), it is termed 180 degrees. Zero degrees means the end of the arm is pointing towards the East and 180 degrees means the end of the arm is pointing towards the West.

A straight angle is 180 degrees.

The 180-degree angle is known as a straight angle. The sides of the angle are opposite to each other and they make a straight angle on a straight line through the vertex. The appearance of a 180-degree angle is a straight line.

In a Euclidean space, the sum of angles of a triangle equals the straight angle (180 degrees, π radians, two right angles, or a half-turn). A triangle has three angles, one at each vertex, bounded by a pair of adjacent sides.

The relation between the same side interior angles is determined by the same side interior angle theorem. The “same side interior angle theorem” states: If a transversal intersects two parallel lines, each pair of same side interior angles are supplementary (their sum is 180∘ ).

Angle Facts for GCSE

• The interior angles of any triangle add up to 180 degrees.
• The interior angles of any quadrilateral add up to 360 degrees.
• a + b = 180 degrees.
• Where two straight lines cross, the opposite angles are equal.
• x = y + z.
• Corresponding Angles.
• Alternate Angles.
• Co-Interior Angles add to 180 degrees.

A triangle’s angles add up to 180 degrees because one exterior angle is equal to the sum of the other two angles in the triangle. In other words, the other two angles in the triangle (the ones that add up to form the exterior angle) must combine with the third angle to make a 180 angle.

The answer is yes! To mathematically prove that the angles of a triangle will always add up to 180 degrees, we need to establish some basic facts about angles. The first fact we need to review is the definition of a straight angle: A straight angle is just a straight line, which is where it gets its name.