1. STUDENT ACTIVITY 1 STUDENT ACTIVITY 2
Quadrilaterals
STUDENT ACTIVITY 1
STUDENT ACTIVITY 2

2. STUDENT ACTIVITY 1

3. FIGURE: A B D C

4. Questions and Answers…
1. What are the sides of the quadrilaterals?
♣ Line Segments AC, AB, BD and CD
2. What are the angles?
♣ Angles A, B, C and D
3. The Vertices
♣ Points A, B, C and D A B C D

5. Questions and Answers…
4. Which sides are opposite? Consecutive or non- opposite?
♣ Opposite Sides: Line Segments AB and CD, AC and BD
♣ Consecutive Sides: Line Segments AB and AC,
CD and BD, BD and BA, CD and AC A B C D

6. Questions and Answers…
5. Which angles are opposite? Consecutive?
♣ Opposite Angles: Angle BAC & BDC, angle ABD & DCA,
♣ Consecutive Angles: Angle BAC & ABD, angle ABD &
BDC, angle BDC & DCA, angle DCA & BAC A B C D

7. Questions and Answers…
6. If we draw a line connecting the opposite vertices,
a. How many lines will be formed?
♣ Two lines will be formed.
b. What kind of lines are they?
♣ They are intersecting lines.
c. Name these lines.
♣ Line AD and line BC A B C D

8. STUDENT ACTIVITY 2

9. OBJECTIVE
In this activity, you will recognize the types of quadrilaterals and its properties.
PROCEDURE:
Tell each group to surf in the internet about the following the following quadrilaterals: trapezoid, parallelogram, rectangle, square, rhombus, and trapezium.
2. Ask students to create a “map” or chart that shows the relationships among the different types of quadrilaterals.
3.Then, each group will explain the chart and its hierarchy to the class.

10. QUADRILATERALS SQUARE RHOMBUS TRAPEZOID PARALLELOGRAM RECTANGLE
TRAPEZIUM

12. RELATIONSHIPS AMONG QUADRILATERALS

13. END

14. A trapezoid (in North America) or trapezium (in Britain and elsewhere) is a quadrilateral, which is defined as a shape with four sides, which has one set of parallel sides.
Some authors define it as a quadrilateral having exactly one set of parallel sides, so as to exclude parallelograms, which otherwise would be regarded as a special type of trapezoid.

15. In geometry, a parallelogram is a quadrilateral with two sets of parallel sides. The opposite sides of a parallelogram are of equal length, and the opposite angles of a parallelogram are congruent. The three-dimensional counterpart of a parallelogram is a parallelepiped.

16. In geometry, a rhombus (plural rhombi) or rhomb (plural rhombs) is an equilateral quadrilateral. In other words, it is a four-sided polygon in which every side has the same length. A rhombus can be said to be the combination of a parallelogram and a kite.

17. In geometry, a rectangle is defined as a quadrilateral where all four of its angles are right angles. From this definition, it follows that a rectangle has two pairs of parallel sides; that is, a rectangle is a parallelogram. A square is a special kind of rectangle where all four sides have equal length; that is, a square is both a rectangle and a rhombus. A rectangle that is not a square is colloquially known as an oblong.
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18. A square (regular quadrilateral) is a special case of a rectangle as it has four right angles and parallel sides. Likewise it is also a special case of a rhombus, kite, parallelogram, and trapezoid.
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19. A trapezium is a quadrilateral with no parallel sides
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