Presentation is loading. Please wait.

Presentation is loading. Please wait.

Identifying Attributes of Quadrilaterals. Examples of 4-sided shapes These shapes are called QUADRILATERALS.

Similar presentations


Presentation on theme: "Identifying Attributes of Quadrilaterals. Examples of 4-sided shapes These shapes are called QUADRILATERALS."— Presentation transcript:

1 Identifying Attributes of Quadrilaterals

2 Examples of 4-sided shapes These shapes are called QUADRILATERALS

3 Quadrilateral Quadrilateral just means "four sides" QUAD means four LATERAL means side Any four-sided shape is a Quadrilateral but only if each of the four sides are straight. This line is considered to be a straight line, even though it’s diagonal.

4 These look like 4-sided figures but not all four of the sides are straight!! Non-Example of Quadrilaterals Any four-sided shape is a Quadrilateral but only if each of the four sides are straight. This line is considered to be a straight line, even though it’s diagonal. If all the lines on this shape were diagonal, this would be a quadrilateral.

5 Why is it important to know the properties of quadrilaterals? Understanding the properties of quadrilaterals will help you to understand the properties of three-dimensional shapes like cubes and rectangular prisms.

6 Concept Development Definition A quadrilateral is a four-sided shape with FOUR STRAIGHT SIDES. Note: Special quadrilaterals have special names.

7 Special Quadrilaterals have special names trapezoid square rectangle parallelogram rhombus Let’s learn about what makes these quadrilaterals special…

8 Parallelogram A four-sided shape with exactly two pair of parallel sides. Any four-sided shape is a Quadrilateral but only if each of the four sides are straight.

9 Concept Development Definition A quadrilateral is a four-sided shape with FOUR STRAIGHT SIDES. Note: Special quadrilaterals have special names.

10 Trapezoid A four-sided shape with exactly one pair of parallel sides. The two sides that are parallel are called the bases of the trapezoid. Any four-sided shape is a Quadrilateral but only if each of the four sides are straight. base

11 Rectangle A four-sided shape having exactly two pair of parallel sides. All angles on a rectangle are right angles. Any four-sided shape is a Quadrilateral but only if each of the four sides are straight.

12 Square A four-sided shape having exactly two pair of parallel sides. All angles on a square are right angles. A square has four equal-length sides. Any four-sided shape is a Quadrilateral but only if each of the four sides are straight

13 Rhombus A four-sided shape having four sides of equal length and exactly two pair of parallel sides. Any four-sided shape is a Quadrilateral but only if each of the four sides are straight

14 Guided Practice #1 A quadrilateral is a Whiteboard: What shape is this girl leaning on? Let me show you how I would decide what shape this is… four-sided shape with FOUR STRAIGHT sides.

15 Guided Practice #2 A quadrilateral is a Whiteboard: What shape is this boy pushing? Pair Share: Talk with your partner and decide: Is this a quadrilateral? How many pairs of parallel lines are there? How many right angles are there? Are all the sides equal? Use these answers to identify this shape. This shape is a rectangle. Why? It has EXACTLY two pair of parallel sides. It has four right angles. four-sided shape with FOUR STRAIGHT sides.

16 Guided Practice #3 A quadrilateral is a Whiteboard: On what shape is the girl standing? Pair Share: What 3 special properties does this special shape have? A square has four equal sides has EXACTLY two pair of parallel sides and four right angles four-sided shape with FOUR STRAIGHT sides.

17 Guided Practice #4 A quadrilateral is a Whiteboard: On what shape is the girl putting her foot? Pair Share: What 2 special properties does this special shape have? A rhombus has four equal sides and EXACTLY two pair of parallel sides four-sided shape with FOUR STRAIGHT sides.

18 Guided Practice #5 Which of these shapes is a Parallelogram? A four-sided shape with exactly two pair of parallel sides. Rhombus Rectangle Square Why not? Why? Pair Share

19 Guided Practice #6 Which of these shapes is a Rectangle? A four-sided shape having all right angles. It has exactly two pair of parallel sides. Why not? Rectangle Square Why not? Rectangle Why? Pair Share


Download ppt "Identifying Attributes of Quadrilaterals. Examples of 4-sided shapes These shapes are called QUADRILATERALS."

Similar presentations


Ads by Google