# Math

Please let me know if I am right on these.

Mystery #1.

1. The mystery shape has fewer than 3 lines of symmetry. 2. It has at least 1 pair of perpendicular sides. 3. It has at least 1 pair of parallel sides. 4. It has less than 1 obtuse angle.

This is what I came up with for this the answer is Rectangle iwth adjacent sides of different length

Mystery #2.

1. It has fewer than 3 diagonals. 2. It's total angle measure is greater than 180 degrees. 3. It at least has 1 obtuse angle. 4. It has at least 1 line of symmetry.

This what I came up with for this the answer is Rhombus

Mystery #3.

1. The mystery shape has fewer than 3 lines of symmetry. 2. It has at least 1 pair of perpendicular sides. 3. It has at least 1 pair of parallel sides. 4. It has less than 1 obtuse angle.

This is what I came up with for this the answer is Rectangle and Square

Mystery #4.

1. The mystery shape has at least 2 congruent sides. 2. It has fewer than 2 obtuse angles. 3. It has more than 1 line of symmetry. 4. It has at least 1 actue angle.

This is what I came up with for this answer is Equilateral triangle

Mystery #5.

1. The mystery shape has at least 2 lines of symmetry. 2. It has no pairs of perpendicular sides. 3. It has more than 3 congruent angles. 4. It's total angle measure is between 180 degrees and 720 degrees.

This is what I came up with for this answer is Regular Pentagon

Mystery #6.

1. The mystery shape has at least 2 lines of symmetry. 2. At least 1 of its diagonals is also a line of symmetry. 3. It has at least 1 obtuse angle. 4. At least 3 of its angles are congruent. 5. It's total angle measures is between 100 degrees and 1000 degrees.

This is what I came up with for this answer is Trapezoid

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1. 1,2 correct.
3. Check how many lines of symmetry a square has!
4. correct.
5. correct.
6. A trapezoid does not have a line of symmetry along its diagonal, and it does not have 3 of its angles congruent. Try something else.

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2. Three is suppose to be rectangle and square, and six is either regular hexagon or regular octagon

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posted by Rayna
3. 3. Rectangle is correct, but...
"The mystery shape has fewer than 3 lines of symmetry."
Would that include a square?

6.
"It's total angle measures is between 100 degrees and 1000 degrees."
Check total interior angles for hexagon and octagon.

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4. Okay I see that a hexagon has 6 sides and total angle measure 720 degrees. A octogon has 8 sides and the total angle measures 1080 degrees. the answer to number 6. is a regular hexagon.

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posted by Rayna
5. Great! Regular hexagon is correct for #6.

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