pretest review (day 3)
DESCRIPTION
Pretest Review (Day 3). Reviewing skills needed to succeed in Geometry. 1. Review Homework 2. Warm Up 3. Review for Pretest (Day 3) If time….* *Jeopardy Review Game!**. Agenda. Please get out your agenda and record tonight’s homework. 1 . “Geometry –Review for Pretest ” #27-32. - PowerPoint PPT PresentationTRANSCRIPT
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Pretest Review (Day 3)REVIEWING SKILLS NEEDED TO SUCCEED IN GEOMETRY.
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Agenda
1. Review Homework 2. Warm Up 3. Review for Pretest (Day 3)
If time….**Jeopardy Review Game!**
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Homework
Please get out your agenda and record tonight’s homework.
1. “Geometry –Review for Pretest” #27-32. 2. BREAKING NEWS!
Pretest has been moved to Wednesday, September 17th.
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Learning Objectives
1. Identify and/or recognize: points, lines, planes, segments, rays.
2. Identify special pairs of angles.
3. Find the surface area and volume of a prism.
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Warm Up
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Vocabulary In Geometry, it is important to use the correct notations!
Line: A series of points that extends in 2 opposite
directions without end Can name a line by any two points on the
line with a line above it, or by a single lower case letter.
A B
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Vocabulary - Segments
Segment: part of the line consisting of 2 endpoints and all the points between them
How you name a segment: Use the 2 endpoints with a straight line above.
Read “segment AB” or “segment BA”
A B
BA
or
AB
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Vocabulary - Rays
Ray: part of a line consisting of one endpoint and all the points of the line on one side of the endpoint How you name a ray: Endpoint must be first, then
any other point on the ray; write an arrow pointing to the right above
Read “Ray AB” or “Ray AC”.
DO NOT write Ray BA or Ray CA.
Must name endpoint first!!
A B
AC
or
AB
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Vocabulary - Planes
A flat surface that has no thickness Contains many lines Extends w/o end in the direction of all its lines Named by a single capital letter OR by AT LEAST 3
POINTS NOT ON THE SAME LINE
Plane ABC
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Parallel Planes //
Planes that do not intersect
Example:
1. Name a plane parallel to plane EGH.
Answer: Plane _____
HG
ED
A
B
C
F
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Parallel Segments //
1. Name 2 parallel segments.
A
B
C
D
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Use the following image to answer the question.
1. Name a line.
2. Name a segment.
3. Name a ray.
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Naming an Angle
What is an angle? Formed by 2 rays with the same
endpoint
How do you name an angle? 3 ways.
1
NOTE: the
middle letter is
the vertex
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Vocabulary Angles:
Complementary 2 angles that add up to 90˚
Supplementary: 2 angles that add up to 180˚
All straight angles form a line, therefore measure 180˚
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Triangles:
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Let’s Practice!
A question will appear on the ENOBoard. Write your answer on the whiteboard and raise it up.
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1. Classify the Triangle (by angles)
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2. Classify the triangle (by sides)
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3. Solve for the missing side.
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4. Name the Quadrant.
(-2, -4)
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5. Find the measure of the missing angle.
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Alternate Interior Angles
Non-adjacent
Lie on opposite sides of the transversal in between the 2 lines it intersects
Remember: interior means inside the parallel lines.
These angles are congruent.
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Alternate Exterior Angles
Lie outside the 2 parallel lines on opposite sides of the transversal.
These angles are congruent.
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Corresponding Angles
Lie on the same side of the transversal
In corresponding (same) positions
Corresponding angles are congruent.
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Same Side _____________
Same Side Interior Same Side Exterior Angles are supplementary.
(add up to ______).
Angles are supplementary (add up to ______).
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Vertical Angles
• Vertical angles share the same vertex.
• Vertical angles are congruent.
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Surface Area
In words, the surface area of a rectangular prism is the area of the six rectangles that cover it.
But we don't have to figure out all six because we know that the top and bottom are the same, the front and back are the same, and the left and right sides are the same.
Example: Find the surface area of the box.
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Volume
The amount of space occupied by a 3D figure as measured in cubic units (as inches, quarts, or centimeters)
Volume= length x width x height
• Example: Find the volume of the box shown.
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Probability
• Using the spinner shown above, shat is the probability of landing on an even number?
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Nice work, Mathletes!