Mathematics 4 pics 1 word U A P

Mathematics - '4 pics 1 word' U A P R A L D L I S E Q T R Can you define this word in a mathematical context?

Mathematics - '4 pics 1 word' R E T G P A C N B P O O Can you define this word in a mathematical context?

Mathematics - '4 pics 1 word' N P O A P X O S E P G H Can you define this word in a mathematical context?

Mathematics - '4 pics 1 word' O T H P G N N N A E S A Can you define this word in a mathematical context?

Mathematics - '4 pics 1 word' G P R E R U A L P G J I Can you define this word in a mathematical context?

Mathematics - '4 pics 1 word' G P R E R U A L P R J I Can you define this word in a mathematical context?

Mathematics - '4 pics 1 word' I X T O G N R R I T E H Can you define this word in a mathematical context?

Mathematics - '4 pics 1 word' = 360° I X T O G N R R E T E H Can you define this word in a mathematical context?

Mathematics - '4 pics 1 word' J O K N P D R M I S U G Can you define this word in a mathematical context?

Mathematics - '4 pics 1 word' E I E E D S O E R G E A Can you define this word in a mathematical context?

Polygons A polygon is a shape made from only straight edges Polygons are named on the basis of how many sides they have You need to learn the following names: Some of the names get silly… 5 sides 4 sides 3 sides Triangle 6 sides Quadrilateral 7 sides Pentagon 8 sides Sides Polygon Name 12 Dodecagon 13 Triskaidecagon 14 Tetrakaidecagon 19 Enneadecagon 20 Icosagon 100000 Megagon 10100 Googolgon Luckily you don’t have to learn these! Hexagon Heptagon Octagon

Regular and irregular polygons A regular polygon is one with all sides the same and angles the same Because you often use regular triangles and quadrilaterals, they have special names: Equilateral Triangle Square To describe all other regular polygons, just put the word ‘regular’ in front of their name Regular pentagon An irregular polygon has sides and angles that vary Irregular heptagon Irregular octagon Regular hexagon

Name this Shape Regular heptagon

Name this Shape Irregular pentagon

Name this Shape Irregular hexagon

Why is this polygon NOT regular (irregular)? Sides are equal but angles aren’t

Why is this polygon NOT regular (irregular)? Only 2 sides and 2 angles equal

Why is this polygon NOT regular (irregular)? Angles are equal but sides aren’t

Angles in Polygons The angles inside the shape at each corner are called interior angles The angle between pairs of adjacent sides are called exterior angles Can you spot the connection between interior and exterior angles? They add up to 180 o at any corner Interior Exterior angle + angle In this topic, we will look at: the sum of the exterior angles of any polygon the sum of the interior angles of any polygon the exterior angle of a regular polygon the interior angle of a regular polygon

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