the presentation has ppt for quadrilaterals

The presentation has the lesson plan for students who are preparing for their bed exams and practicals. it has very large information regarding how to teach the subject to the student

1. PREPARED AND SUBMITTED BY Name: K Divya Roll no : 3319-23-701-019 Course: B.ED Subject: Mathematics Class: 9 th class College: VIVEKANANDA COLLEGE OF EDUCATION, SHADNAGAR

2. INTRODUCTION Good Morning Students How are you all

3. PREVIOUS Questions What is the meaning of Quadrilaterals ? If we have four sides in figure what do we call the figure ? How many sides does a square has?

4. Brain Storming How many diagonals parallelogram has? In a parallelogramare opposite sides equal?

5. THEOREM A DIAGNOL OF A PARALLELOGRAM DIVIDES IT INTO TWO CONGRUIENT TRIANGLES

6. Lesson of Presentation Reading: Teacher asks the students to read page no: 179 related to the topic of Quadrilaterals theorem.

7. Conceptual Understanding Given: A parallelogram, ABCD and AC is its diagonal To Prove ABC= CDA Proof: In ABC and CDA, we have ∠ DAC= ∠ BCA [alt.int. angles, Since AD||BC] AC=AC [Common Side] And ∠ BAC- ∠ DAC [alt. int. angels, Since AB||DC] Therefore BY ASA congruence axiom, we have ABC= CDA A B D c

8. Assignment In an adjacent figure ABCD is a Parallelogram, ABEF is a rectangle show that AFD= BEF A B C D

9. Conclusion Students are able to understand under stand the Theorem and try to do problems on their own

10. References Wikipedia Text book

11. Evaluation What is a quadrilateral ? How many angels does a quadrialteral have ? Sum of interior angels of quadrilateral ? Diagnols of Parallelogram divides it into two congruent triangles

12. Thank you