triangles

Class 5 Maths I Colorful Shapes Adventure! Triangles Quadrilaterals Explore Types of Triangles Discover Cool Quadrilaterals Get ready for bright colors & big diagrams!.

What is a Triangle? Definition A triangle is a closed shape with 3 straight sides and 3 angles. It has 3 Vertices (corners) O It has 3 Straight Sides O It has 3 Angles Vertex Pizza Slice Traffic Sign Side Angle.

Equilateral "Equal Sides" All 3 sides are equal length e All angles are equal (600) CLASSIFICATION BY SIDE LENGTH Types of Triangles Look at the length of the sides to tell them apart! Isosceles "TWO Equal Legs" Only 2 sides are equal Angles opposite equal sides are equal Scalene - All Different- O All 3 sides are different lengths O All 3 angles are different.

Acute "Small Angles" All 3 angles are less than 900 Sharp, pointy corners CLASSIFICATION BY ANGLES Types of Triangles Look at the size of the angles to tell them apart! Right "Perfect Corner" e Has exactly one 900 angle Like the corner of a square Obtuse "Wide Angle" e Has one angle greater than 900 e Wide, open shape.

What is a Quadrilateral? Definition A quadrilateral is a closed shape with 4 straight sides and 4 angles. O It has 4 Vertices (corners) O It has 4 Straight Sides O It has 4 Angles Window Igle Vert si.

Square The perfect BOX All 4 sides are equal All 4 angles are 900 Opposite sides parallel QUADRILATERALS FAMILY Square & Rectangle O Rectangle Stretched BOX Opposite sides are equal All 4 angles are 900 Opposite sides parallel.

QUADRILATERALS FAMILY Rhombus & Parallelogram O Parallelogram The Slanted Rectangle Rhombus The Slanted Square All 4 sides are equal Opposite angles are equal Opposite sides parallel Opposite sides are equal Opposite angles are equal Opposite sides parallel.

Trapezoid Also called Trapezium Has 4 sides Exactly one pair of parallel sides Parallel sides are like train tracks QUADRILATERALS FAMILY Trapezoid & Kite Kite Flying High Shape Two pairs of adjacent equal sides Looks like a flying kite Has one line of symmetry O.

Did You Know? Fun Facts about Shapes! Super Strong Engineers use triangles in bridges because they are the strongest shape and don't collapse easily! Parallel Tracks Rectangles and parallelograms always have two pairs of parallel sides, just like railroad tracks that never meet. Perfect 600 In an equilateral triangle, every single angle is exactly 60 degrees. They are all equal! Double Identity A square is actually a special type of rectangle AND a special rhombus at the same time! What's in a Name? In the US, it's called a Trapezoid. But in the I-JK and Australia, the same shape is called a Trapezium! 83 No Gaps! All quadrilaterals can •tile" a floor perfectly without leaving any gaps between them. Mirror Image Kites typically have one main line of symmetry. It's like looking in a mirror right down the middle!.

RECAP TIME! Summary: What Did We Learn? Triangles 3 A closed shape with 3 sides and 3 angles. By Sides: Equilateral (all equal), Isosceles (2 equal), Scalene (none equal). A By Angles: Acute (<900), Right (=900), Obtuse (>900). Quadrilaterals 4 A closed shape with 4 sides and 4 angles. Sum of all angles is 3600. Many special types based on parallel sides and angles. Equilateral Right Scalene Square Rhombus Rectangle Trapezoid Parallelogram Kite.