Feeling Quiz Bee

Provide every pupil with used cardboard/illustration board where they can write their answers. Recycled cloth may also be used as eraser. If there are not enough board to be used, this can also be done as a group activity.

Give the mechanics of the quiz bee. As you flash the meaning of the different kinds of lines and angles, pupils will draw their representations. When they are done, let them raise their boards when the time is up.

• Recall the relationship of a quadrilateral and a triangle.
• Give the description of each figure.

• What can you see in the flag?
• What plane figures can you see?

Miss Fina as some of her pupils to bring different objects with the shape of a triangle. Benilda brought a picture of a house. Grace showed a picture of a traffic sign, and Jocelyn prepared a triangular flaglet.

• Observe the picture of the different triangular objects. How will you describe the different triangular objects?

Do all triangles have equal sides?�Do they all have equal angles?

• Group yourselves into six.
• Describe the cutout triangles given.
• Paste the cutouts and write your output on a manila paper.
• After all groups have finished, display your outputs and present them to the class.

Mr. Medes showed a big triangle to his class. He has to divide it into small triangles of different sizes. Look at how he divided it.

• How many small triangles does he have? Are the sides and angles each triangle equal?

Triangles can be classified according to their angles.

A right triangle has a right angle which measures 90°. ABC is a right triangle.

An acute triangle has 3 acute angles, each measuring less than 90°. DEF is an acute triangle.

An obtuse triangle has an obtuse angle which measures more than 90°. GHI is an obtuse triangle.

Triangles can be classified according to their sides.

A equilateral triangle has 3 equal sides.

JKL is an equilateral triangle.

An isosceles triangle has 2 equal sides.

MNO is an isosceles triangle.

A scalene triangle has no equal sides.

PQR is scalene triangle.

A. Identify the following triangles according to their angles.

1. 2. 3.

B. Identify the following triangles according to their sides.

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1. 2. 3.

Draw a circle if your answer is Yes or a diamond if it is No.

1. Does an isosceles triangle have 2 equal sides?
2. Does an acute triangle have an obtuse angle?
3. Does an equilateral triangle have equal side?
4. Does a scalene triangle have no equal sides?
5. Does a right triangle have a right angle?
6. Does an obtuse triangle have an acute angle?

Answer the following questions:

1. How many equal sides does an isosceles triangle have?
2. How many equal sides does an equilateral triangle have?
3. What kind of angle does an acute triangle have?
4. What kind of angle does a right triangle have?
5. What kind of angles does an obtuse triangle have?

How are triangles classified?

Triangles can be classified according to angles as right, acute, obtuse triangle. It can also be classified according to sides as equilateral, scalene, or scalene triangle.

Using old calendars, cut out different triangles. Classify them according to sides and angles.

Name the triangle described in each item.

1. It is a triangle which has a right angle.
2. It is a triangle which has an obtuse angle.
3. It is a triangle which has 3 acute angles.
4. It is a triangle which has 2 equal sides.
5. It is a triangle which has no equal sides
6. It is a triangle which has 3 equal sides.

Draw the following triangles correctly.

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1. Right triangle
2. Obtuse triangle
3. Acute triangle

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• Equilateral triangle
• Isosceles triangle
• Scalene triangle

Draw the following figures with the indicated measurement.

1. Equilateral triangle, each side measures 5 cm.
2. Isosceles triangle, equal sides measure 4 cm each, one side measures 6 cm.
3. Scalene triangle, side A measure 6 cm, side B measures 7 cm, side C measures 4 cm.
4. Right triangle
5. Obtuse triangle, 110°
6. Acute triangle, 70°