Bell Activity(9th) Find the surface area of a cylinder using its net with a height of 9cm and a radius of 4cm. http://www.virtualnerd.com/geometry/surface-area-

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Presentation transcript:

Bell Activity(9th) Find the surface area of a cylinder using its net with a height of 9cm and a radius of 4cm. http://www.virtualnerd.com/geometry/surface-area- volume-solid/prisms-cylinders-area/calculate-surface- area-cylinder-net

Bell Activity (10th) https://www.youtube.com/watch?v=xWlR2GonF7Q

In your own words, describe the following terms point, line, plane, line segment, and ray

Points, Segments, Lines, Angles, and Planes

I Can... I can draw points, lines, line segments, and rays. I can identify these in two-dimensional figures.

Vocabulary Points Lines Planes Parallel/Perpendicular Collinear/Coplanar Skew Lines

Point A point is like a dot, and is named by one letter. M Tip of a pencil M

Line A line is an infinite set of points that expand in both directions. n A B Pretend this road extends forever.

Line Segment A line segment is part of a line, defined by two endpoints. C D

Ray A ray is part of a line with one endpoint. It extends infinitely in one direction. C D Sun Ray

Plane A plane is the set of all points that form a flat surface. It extends in all directions infinitely.

Intersecting Lines Two or more lines that meet at a point. F

Parallel Lines Two or more lines that never intersect.

Perpendicular Lines Two lines that intersect and form RIGHT angles.

Collinear Points Collinear Points are points that lie on the same line.

Coplanar Points Coplanar Points are points that lie on the same plane

Planes intersect at a line. Skew lines are lines that do not intersect, are not parallel, and do not lie in the same plane.

A Line and Plane Intersecting

In Summary Planes intersect at a line Lines intersect at a point A line and a plane intersect at a point Skew lines are not parallel, do not intersect, and are not on the same plane

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