Alternate angles (Angles within 'Z')

Some of you uses the concept of aternate ngles (not taught yet) to solve angles problems. What I shared with the class was that the two angles shown above are equal if the two lines are equal. Using what you know about angles, can you explain why the angles are equal?

Parallelogram

Here's another question!

Is a rectangle also a parallellogram? Explain. He he.

Math Question - for Everyone!

Tom had 20 marbles more than Jerry. Tom then gave some of his marbles to Jerry. As a result, Jerry now has 36 more marbles than Tom. How many marbles did Tom gave Jerry? Explain.

Angles in a triangle

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Question:

Sam says that he has a triangle whose 3 angles are 36, 98 and 72 (degrees). Is this possible? Explain.

Science - Water and its States

Hi Guys!

Is the following statement true?

Water will change from a liquid to a gas (gaseous state0 when the temperature reaches 100 degrees Celsius. Otherwise it will remain a liquid.

Any comments?