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FC: By: Alyssa R. | Shapes and Design Project
1: Pentagons | Always have 5 sides and 5 vertices. Each angle is 108 degrees and the sum of all the angles is 540 degrees.
2: Hexagons | Hexagons have 6 sides and 6 vertices. Each angle is an obtuse angle at 120 degrees, so the sum of all the angles is 720 degrees.
3: Octagon | Octagons have 8 sides and 8 vertices. Each angle is 135 degrees and the sum of all the angles is 1080 degrees.
4: Decagon | Decagons have 10 sides and 10 vertices. Each angle is 144 degrees so the sum of all the angles is 1440 degrees.
5: Triangles | All triangles have 3 sides and 3 vertices. The sum of all triangles have 180 degrees.They are all classified by sides and angles.
6: Triangles- Equilateral | All the sides are equal which makes it an equilateral. This triangle has all equal angles so each angle is 60 degrees. (3 sides, 3 vertices, sum of all angles 180 degrees)
7: Triangles-Isosceles | Only 2 side equal in an isosceles triangle. There are always going to be 2 equal angles. (3 sides, 3 vertices, sum of all angles is 180 degrees)
8: Triangles- Scalene | NO sides are equal and no angles are equal. (3 sides, 3 angles, sum of all angles is 180 degrees)
9: Triangle-Right | A triangle is right when there is 1 right angle or 1 angle is 90 degrees. (3 sides, 3 angles, sum of all angles is 180 degrees.
10: Triangle- obtuse | A triangle is obtuse when 1 of its angles is obtuse meaning there is one angle greater than 90 degrees. (3 sides, 3 angles, sum of all angles is 180 degrees)
11: Triangle-Acute | A triangle is acute when all 3 angles are acute or when all 3 angles are less than 90 degrees. (3 sides, 3 angles, sum of all angles are 180 degrees) An example is an equilateral triangle.
12: Quadrilaterals | Quadrilaterals have 4 sides and 4 angles. The angle sum of all the angles together is 360 degrees. There are many different types of quads.
13: Quads-Square | Squares have 4 sides and 4 angles. Each angle is 60 degrees and it is the only regular quad, meaning it has equal sides and angles. | tiles are squares
14: Rectangle | A rectangle is a quadrilateral (a 4 sided polygon) with opposite angles and sides. Each angle is 90 degrees. (Each angle is a right angle.) Has 2 sets on parallel lines.
15: Parallelogram | A parallelogram is a quadrilateral that has 2 set of parallel lines. Opposite angles and sides are equal just like the square and rectangle.
16: Rhombus | A rhombus is a quadrilateral that has all equal sides. So like the square it is a regular quad. Opposite sides and angles are equal.
17: Trapezoid | A trapezoid is a quad that could have 2 equal sides or no equal sides, but it always has one set of parallel lines.