math quarter3 grade 4 identifying and describing triangles.pptx

math 4
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1. MATHEMATICS - IV Quarter 3 Edward D. Taguan Teacher -1

2. IDENTIFYING AND DESCRIBING TRIANGLES

3. Feeling Quiz Bee What kind of angle is shown? RIGHT ANGLE

4. Feeling Quiz Bee What kind of angle is shown? ACUTE ANGLE

5. Feeling Quiz Bee What kind of angle is shown? OBTUSE ANGLE

6. Miss Liziel asked some of her pupils to bring different objects with the shape of a triangle. Jaymar brought a picture of a house . Reymark showed a picture of a traffic sign , and Judelyn prepared a triangular flaglet .

7. Group Activity: Describe the cut out 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.

8. Triangles can be classified according to their ANGLES. A right triangle has a right angle which measures 90 °. ABC is a right triangle. A B C

9. Triangles can be classified according to their ANGLES. An acute triangle has 3 acute angles, each measuring less than 90 °. DEF is an acute triangle. F D E

10. Triangles can be classified according to their ANGLES. An obtuse triangle has an obtuse angle which measures more than 90°. GHI is an obtuse triangle. I H G

11. Triangles can be classified according to their sides . An equilateral triangle has 3 equal sides. JKL is an equilateral triangle. L K J

12. Triangles can be classified according to their sides . An isosceles triangle has 2 equal sides. MNO is an isosceles triangle. O N M

13. Triangles can be classified according to their SIDES . A scalene triangle has no equal sides. PQR is scalene triangle. R Q P

14. GROUP 1 : ADJUST THE POINTS OF THE FOLLOWING TRIANGLES TO MATCH ITS NAME . GROUP 2: IDENTIFY THE FOLLOWING TRIANGLES ACCORDING TO THEIR ANGLES AND SIDES. GROUP 3:FIND THE DIFFERENT KINDS OF TRIANGLES (ACCORDING TO THEIR ANGLES AND SIDES) FOUND INSIDE YOUR CLASSROOM.

15. How are triangles classified? Triangles can be classified according to angles as right, acute, and obtuse triangle. It can also be classified according to sides as equilateral, scalene, or isosceles triangle .

16. Draw a circle if your answer is YES and 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?

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