A. Objective The learners should be able to investigate changes that happen in the absence of oxygen. B. Materials ● fire. Activity: TITLE: ABSENCE OF OXYGEN Jar with cover (Jar A) Jar without cover (Jar B) 2 same sized candle (small) Match or lighter Timer Ruler C. Precautionary Measure Remember to handle match or lighter carefully and don't play with it for it can cause D. Procedure 1. Label the jar with cover with Jar A and the jar without cover as Jar B. 2. Light the candles with a match and put the candles in each jar. 3. Record the time when the candles are lighted and the time when the light was put off. 4. Cover the Jar A and observe what will happen. 5. Measure the length of the candles after the flame was put off. 6. Record your findings on the chart below. Jars JAR A JAR B Time of the flame was put off Length of the candle after burning Answer the following questions: 1. Which of the 2 jars was the candle's flame put off first? 2. Which of the two candles has the shortest size? 3. What happen, when you cover the Jar A? 4. When the lighted candle in Jar A was covered, the flame was put off, what is the reason why the candle's flame did not continue to burn? 5. What are the 3 main components in combustion? Doss​

Given: Triangle ABC is similar to Triangle DEF​

Answer:

When two triangles are similar, it means that their corresponding angles are congruent (equal in measure) and their corresponding sides are in proportion (the ratios of the lengths of corresponding sides are equal).

Given that Triangle ABC is similar to Triangle DEF, this implies:

1. Angle A is congruent to Angle D

2. Angle B is congruent to Angle E

3. Angle C is congruent to Angle F

And for the sides:

1. The ratio of side AB to side DE is equal to the ratio of side BC to side EF, which is also equal to the ratio of side AC to side DF.

This is represented as:

AB/DE = BC/EF = AC/DF

These are the fundamental properties that define similar triangles in geometry.