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)

Which angle is the smallest? Which side is the shortest?

57˚

<C, side AB

A

B C82˚ 41˚

Find the sum of the interior angles of a:

16-gon

14(180) = 2520˚

Find the measure of one interior angle of a regular:

Octagon

6(180) = 135˚ 8

Which quadrilaterals have:

1 pair of opposite sides congruent

IT

Find the measure of one exterior angle of a regular:

Pentagon

360 = 72˚ 5

Find the measure of one exterior angle of a regular:

20-gon

360 = 18˚ 20

Find the sum of the exterior angles of a:

20-gon

360˚

Which quadrilaterals have:

Congruent diagonals

R, S, IT

Find the midpoint:

(3, 5) (8, 9)

AVERAGE!!(5.5, 7)

Which quadrilaterals have:

Perpendicular diagonals

Rh, S

Which quadrilaterals have:

1 pair of opposite sides //

Trapezoid

Which quadrilaterals have:

2 pairs of opposite sides congruent

P, R, Rh, S

Find the measure of one exterior angle of a regular:

Octagon

360 = 45˚ 8

Find the sum of the exterior angles of a:

37-gon

360˚

Find the sum of the interior angles of a:

Hexagon

4(180) = 720˚

Which angle is the smallest? Which side is the shortest?

<A, side BC

A

B C65˚

50˚ 180 – 50 = 130130 /2 = 65

65˚

Which quadrilaterals have:

Diagonals that bisect each other

P, R, Rh, S

Find the measure of angle J

54˚

J

72˚ 180 – 72 = 108108 /2 = 54

Write a biconditional:

If 2 segments are congruent, then they have the same length.

Two segments are congruent iff they have the same length.

Which quadrilaterals have:

Opposite angles congruent

P, R, Rh, S

Find the sum of the exterior angles of a:

septagon

360˚

Write a biconditional:

If a polygon is a hexagon, then it has 6 sides.

A polygon is a hexagon iff it has 6 sides.

Find the distance:

(3, 5) (8, 9)52 + 42 = d2

25 + 16 = d2

41 = d2

6.40 ≈ d

Find the midpoint:

(-9, 7) (-8, -1)

AVERAGE!!(-8.5, 3)

Find the measure of one interior angle of a regular:

Pentagon

3(180) = 108˚ 5

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)

Find the distance:

(-9, 7) (-8, -1)12 + 82 = d2

1 + 64 = d2

65 = d2

8.06 ≈ d

Find the midpoint:

(10, -4) (4, 4)

AVERAGE!!(7, 0)

Find the measure of one exterior angle of a regular:

Decagon

360 = 36˚ 10

Find the sum of the exterior angles of a:

nonagon

360˚

Find the distance:

(-2, 3) (10, -2)122 + 52 = d2

144 + 25 = d2

169 = d2

13 = d

Find the midpoint:

(-2, 3) (10, -2)

AVERAGE!!(4, ½)

Which quadrilaterals have:

Diagonals that bisect angles

Rh, S

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.

Find the distance:

(2, -10) (-5, 14)72 + 242 = d2

49 + 576 = d2

625 = d2

25 = d

Find the midpoint:

(2, -10) (-5, 14)

AVERAGE!!(-1.5, 2)

59˚

49˚

J72˚

Find the measure of angle J

59 + 72 = 131180 – 131 = 49

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)

Find the sum of the interior angles of a:

Dodecagon

10(180) = 1800˚

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?

Find the measure of one interior angle of a regular:

16-gon

14(180) = 157.5˚ 16

Find the distance:

(10, -4) (4, 4)62 + 82 = d2

36 + 64 = d2

100 = d2

10 = d

(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

Which quadrilaterals have:

2 pairs of opposite sides //

P, R, Rh, S