Class 07 The triangles and their properties triangle crossword puzzle

 

TRIANGLES AND THEIR PROPERTIES

ACTIVITY –2. Triangle crossword puzzle.

DATE:

AIM / Objective:

To solve the puzzle

MATERIALS REQUIRED:

Pencil, scale, eraser

PREREQUISITE KNOWLEDGE:

Concept of triangles

PROCEDURE:

Description: A crossword with clues will be given to the students.

Across:

1. A triangle with all sides equal.

4. A triangle with unequal sides.

6. The sides of the right triangle other than hypotenuse.

8. The property which says  =  +

9. Distance of a vertex of a triangle to its opposite base.

Down:

2. Side opposite to the right angle of a right triangle.

3. A triangle in which two sides are equal.

5. A line segment drawn perpendicular to one side of a triangle from its opposite vertex.

7. The line segment joining the midpoint of one side of a triangle to its opposite vertex.

 

LEARNING ASSESSMENT:

Solve the puzzle

 

SOLUTION:

1. EQUILATERAL   2.HYPOTENUSE

4. SCALENE          3.ISOSCELES

6. LEGS                 5.ALTITUDE

8. PYTHAGORAS   7. MEDIAN

9. HEIGHT

Class 07 The triangles and their properties direction of triangle

 

TRIANGLES AND THEIR PROPERTIES

 

ACTIVITY –1.  Direction of triangle

DATE:

 

AIM / Objective:

To find the median, altitude and centroid of a triangle

MATERIALS REQUIRED:

Pencil, scale, eraser

 

PREREQUISITE KNOWLEDGE:

Concept of triangles

 

PROCEDURE:

Description: Draw two different scalene triangles.

1. Draw median with red colour.

2. Draw altitude with green colour.

3. Draw angle bisector of any one angle with blue colour.

4. Draw perpendicular bisector of any one side with orange colour.

Label the figures completely.

LEARNING ASSESSMENT:

Draw and label the median, altitude, angle bisector and perpendicular bisector.

 

SOLUTION:

 

Class 07 The triangles and their properties Exterior property of a triangle

 

TRIANGLES AND THEIR PROPERTIES

ACTIVITY –1. Exterior property of triangle

DATE:

AIM / Objective:

To find a exterior property of a triangle

MATERIALS REQUIRED:

Pencil, scale, eraser

PREREQUISITE KNOWLEDGE:

Concept of exterior property of triangles

PROCEDURE:

Description: An exterior angle of a triangle is formed when a side of a triangle is produced.

At each vertex you have 2 ways of forming an exterior angle.

LEARNING ASSESSMENT:

 

SOLUTION:

Class 07 The triangles and their properties Angle sum property of a triangle

 

TRIANGLES AND THEIR PROPERTIES

 

ACTIVITY –1.  Angle sum property of a triangle

DATE:

 

AIM / Objective:

To prove the angle sum property

MATERIALS REQUIRED:

Pencil, scale, eraser

PREREQUISITE KNOWLEDGE:

Concept of triangles

PROCEDURE:

Description: the sum of measure of all the angles of a triangle is 180°.

LEARNING ASSESSMENT:

 

SOLUTION: