Download Wednesday, February 13

Wednesday, February 13
1.) Bell ringer ~ Week 2; Problems 3 & 4
2.) Go over Math Minute
3.) Practice vocabulary for the quiz
4.) Review triangle classification
5.) Discuss quadrilaterals
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1. a polygon with 6 sides and 6 angles
2. two angles that add up to 180 degrees
3. a set of points that continues in two opposite directions
4. a segment that connects two points on a circle
5. lines that intersect to form right angles
6. a polygon with 11 sides and 11 angles
7. an angle that measures greater than 90 degrees but less than 180
8. exactly the same size and shape
9. the endpoint shared by two (or more) rays, segments, or lines
10. a segment that connects a point on a circle to the center
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11. a polygon with all sides congruent and all angles congruent
12. a polygon with 4 sides and 4 angles
13. a triangle with 3 different side lengths
14. a segment that connects non-adjacent vertices of a polygon
15. an exact location
16. what is the symbol for parallel?
17. how many degrees in a circle?
18. what is the symbol for congruent?
19. what is the sum of the interior angles of any triangle?
20. what is the symbol for perpendicular?
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ANSWERS!
1. hexagon
2. supplementary
3. line
4. chord
5. perpendicular
6. undecagon
7. obtuse angle
8. congruent
9. vertex
10. radius
11. regular
12. quadrilateral
13. scalene
14. diagonal
15. point
16. ll
17. 360
18. ~
=
19. 180
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20.
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Triangle- a polygon with 3 sides
and 3 angles
Triangles can be classified by
their sides and by their angles.
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Classification by sides:
equilateral- all sides are congruent
isosceles- at least 2 sides are
congruent
scalene- all sides are different in
length
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Classification by angles:
acute- contains 3 acute angles
obtuse- contains 1 obtuse angle*
right- contains 1 right angle*
*the other 2 angles are acute
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37°, 100°, 43°
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A. equilateral acute
B. equilateral obtuse
C. equilateral right
D. isosceles acute
E. isosceles obtuse
F. isosceles right
G. scalene acute
H. scalene obtuse
I. scalene right
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isosceles
right
obtuse and scalene
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Classify each triangle according to its sides
and angles.
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A. equilateral acute
B. equilateral obtuse
C. equilateral right
D. isosceles acute
E. isosceles obtuse
F. isosceles right
G. scalene acute
H. scalene obtuse
I. scalene right
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A. equilateral acute
B. equilateral obtuse
C. equilateral right
D. isosceles acute
E. isosceles obtuse
F. isosceles right
G. scalene acute
H. scalene obtuse
I. scalene right
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A. equilateral acute
B. equilateral obtuse
C. equilateral right
D. isosceles acute
E. isosceles obtuse
F. isosceles right
G. scalene acute
H. scalene obtuse
I. scalene right
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A. equilateral acute
B. equilateral obtuse
C. equilateral right
D. isosceles acute
E. isosceles obtuse
F. isosceles right
G. scalene acute
H. scalene obtuse
I. scalene right
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A. equilateral acute
B. equilateral obtuse
C. equilateral right
D. isosceles acute
E. isosceles obtuse
F. isosceles right
G. scalene acute
H. scalene obtuse
I. scalene right
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Quadrilateral-a polygon with 4 sides and 4
angles
Trapezoid- a quadrilateral with one(1)
pair of parallel sides
The parallel sides are called the bases of the
trapezoid.
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Parallelogram- a quadrilateral with opposite sides parallel
and congruent
Rectangle- a parallelogram with 4 right angles
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Rhombus­ a parallelogram with 4 congruent sides
Square­ a parallelogram with 4 right angles and 4 congruent sides
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Quadrilaterals
no parallel sides
two pair parallel
one pair parallel
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trapezoid
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Classify each quadrilateral: give its MOST specific name!
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