![]() ![]() Some faces parallel Some edges parallel Some faces perpendicular No edges perpendicularġ5 Pyramid A three-dimensional shape which has a polygon for its base and triangular faces which meet at one vertex. No parallel faces or edges No perpendicular faces or edgesġ4 Cylinder A three-dimensional shape with circular ends of equal size. No parallel faces or edges No perpendicular faces or edgesġ3 Cone A three dimensional shape with a circle at its base and a pointed vertex. Some faces parallel Some edges parallel Some faces perpendicular Some edges perpendicularġ2 Sphere A perfectly round three-dimensional shape, like a ball. Some faces parallel Some edges parallel Some faces perpendicular Some edges perpendicularġ1 Rectangular Prism A three-dimensional shape which has 6 rectangular faces. Faces could also be at right angles to one another.ġ0 Cube A three-dimensional shape which has 6 square faces all the same size. In solid shapes edges could be at a right angle to one another. They do not need to be straight or the same length.ĩ Perpendicular A line that is drawn in a right angle to another line. A cube has 12 of these.ħ Vertex (Vertices) The place where three or more edges meet.Ĩ Parallel These type of lines stay the same distance apart for their whole length. A cube has 6Ħ Edge The line where two faces meet. They have three dimensions – length, width and height.ĥ Face Part of a shape that is flat.(Or curved) E.g. They have two dimensions – length and width. These shapes are flat and can only be drawn on paper. They intersect at 90°.1 Objective: To describe properties of solid shapes such as perpendicular and parallel lines, faces and edges No, these lines are not perpendicular because they do not intersect at right angles.Įxample 3: Are these lines perpendicular? Thus, lines AB and EF are parallel to each other.Įxample 2: Are these lines perpendicular? When two lines are perpendicular to the same line, then the two lines are parallel to each other. What can you say about AB and EF?Īlso, line CD is perpendicular to line EF. Start learning today! Solved ExamplesĮxample 1 If AB ⊥ CD and CD ⊥ EF. Read the informational blog posts to gain knowledge and practice with fun and entertaining educational games. If you wish to explore the meaning, history, or tips to excel in any topic, SplashLearn presents an entertaining platform for you. Give your children opportunities to observe perpendicular lines in objects or places around them, such as a tall tree on the ground, an electric pole on the pavement, railway intersection, the corner of two adjacent walls, and high buildings. The lines AB and PQ are perpendicular to each other. Keep the radius the same and cut an arc from Point Y, intersecting the previous arc at B.Draw an arc from X in the upper part of the line PQ. Place the compass needle at point X and set a radius greater than XA.Mark the points where the arcs intersect the line as X and Y.The arc length should be the same on both sides. Draw an arc of any radius on either side of Point A.At the 90° mark on the protractor, mark Point B.Align the baseline of the protractor with the line PQ. Place the center of the protractor on Point A.Draw a horizontal line, PQ, on a sheet of paper.We can draw perpendicular lines in the following ways. If two lines are perpendicular to the same line, they are parallel to each other and will never intersect.These lines always intersect at right angles.The two main properties of perpendicular lines are given below. The lines are not intersecting at right angles. The two lines are intersecting each other at an acute angle. The two lines are parallel and do not intersect each other. Non-Examples of Perpendicular Lines in Real Life We can observe many perpendicular lines in real life. The symbol ⟂ is used to indicate that the lines are perpendicular.Įxamples of Perpendicular Lines in Real Life If two lines, AB and CD, are perpendicular, then we can write them as AB ⟂ CD. The term ‘perpendicular’ originated from the Latin word ‘perpendicularis,’ meaning a plumb line. In geometry, perpendicular lines are defined as two lines that meet or intersect each other at right angles (90°).
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