Write the inverse: Is it true or false?
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Write the inverse:Is it true or false?
If an animal is a panda, then it is black and white.
If an animal is not a panda, then it is not black and white.(False—zebra)
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Which angle is the smallest? Which side is the shortest?
57˚
<C, side AB
A
B C82˚ 41˚
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Find the sum of the interior angles of a:
16-gon
14(180) = 2520˚
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Find the measure of one interior angle of a regular:
Octagon
6(180) = 135˚ 8
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Which quadrilaterals have:
1 pair of opposite sides congruent
IT
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Find the measure of one exterior angle of a regular:
Pentagon
360 = 72˚ 5
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Find the measure of one exterior angle of a regular:
20-gon
360 = 18˚ 20
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Find the sum of the exterior angles of a:
20-gon
360˚
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Which quadrilaterals have:
Congruent diagonals
R, S, IT
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Find the midpoint:
(3, 5) (8, 9)
AVERAGE!!(5.5, 7)
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Which quadrilaterals have:
Perpendicular diagonals
Rh, S
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Which quadrilaterals have:
1 pair of opposite sides //
Trapezoid
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Which quadrilaterals have:
2 pairs of opposite sides congruent
P, R, Rh, S
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Find the measure of one exterior angle of a regular:
Octagon
360 = 45˚ 8
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Find the sum of the exterior angles of a:
37-gon
360˚
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Find the sum of the interior angles of a:
Hexagon
4(180) = 720˚
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Which angle is the smallest? Which side is the shortest?
<A, side BC
A
B C65˚
50˚ 180 – 50 = 130130 /2 = 65
65˚
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Which quadrilaterals have:
Diagonals that bisect each other
P, R, Rh, S
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Find the measure of angle J
54˚
J
72˚ 180 – 72 = 108108 /2 = 54
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Write a biconditional:
If 2 segments are congruent, then they have the same length.
Two segments are congruent iff they have the same length.
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Which quadrilaterals have:
Opposite angles congruent
P, R, Rh, S
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Find the sum of the exterior angles of a:
septagon
360˚
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Write a biconditional:
If a polygon is a hexagon, then it has 6 sides.
A polygon is a hexagon iff it has 6 sides.
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Find the distance:
(3, 5) (8, 9)52 + 42 = d2
25 + 16 = d2
41 = d2
6.40 ≈ d
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Find the midpoint:
(-9, 7) (-8, -1)
AVERAGE!!(-8.5, 3)
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Find the measure of one interior angle of a regular:
Pentagon
3(180) = 108˚ 5
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Write the converse:Is it true or false?
If an animal is a panda, then it is black and white.
If an animal is black and white, then it is a panda.(False—zebra)
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Find the distance:
(-9, 7) (-8, -1)12 + 82 = d2
1 + 64 = d2
65 = d2
8.06 ≈ d
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Find the midpoint:
(10, -4) (4, 4)
AVERAGE!!(7, 0)
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Find the measure of one exterior angle of a regular:
Decagon
360 = 36˚ 10
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Find the sum of the exterior angles of a:
nonagon
360˚
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Find the distance:
(-2, 3) (10, -2)122 + 52 = d2
144 + 25 = d2
169 = d2
13 = d
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Find the midpoint:
(-2, 3) (10, -2)
AVERAGE!!(4, ½)
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Which quadrilaterals have:
Diagonals that bisect angles
Rh, S
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Write a biconditional:
If a quadrilateral has both pairs of opposite sides congruent, then it is a parallelogram.
A quadrilateral has both pairs of opposite sides congruent iff it is a parallelogram.
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Find the distance:
(2, -10) (-5, 14)72 + 242 = d2
49 + 576 = d2
625 = d2
25 = d
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Find the midpoint:
(2, -10) (-5, 14)
AVERAGE!!(-1.5, 2)
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59˚
49˚
J72˚
Find the measure of angle J
59 + 72 = 131180 – 131 = 49
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Write the contrapositive:Is it true or false?
If an animal is a panda, then it is black and white.
If an animal is not black and white, then it is not a panda.(True)
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Find the sum of the interior angles of a:
Dodecagon
10(180) = 1800˚
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x˚
<B, side AC
A
B C(x – 2)˚ 60˚
(x + 2)˚ x + x – 2 + x + 2 = 1803x = 180 x = 6058˚
62˚
Which angle is the smallest? Which side is the shortest?
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Find the measure of one interior angle of a regular:
16-gon
14(180) = 157.5˚ 16
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Find the distance:
(10, -4) (4, 4)62 + 82 = d2
36 + 64 = d2
100 = d2
10 = d
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(3x)˚
3(16) + 3 = 52˚
J (3x + 3)˚
(5x + 1)˚ 5x + 1 + 3x + 3 + 3x = 18011x + 4 = 180 11x = 176 x = 16
Find the measure of angle J
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Which quadrilaterals have:
2 pairs of opposite sides //
P, R, Rh, S