Congruent Figures | MathHelp.com - By MathHelp.com
| 00:0-1 | in the diagram shown here notice that the corresponding parts | |
| 00:05 | of these two triangles are congruent . As shown by | |
| 00:09 | the marks on each triangle . For example , angle | |
| 00:15 | S is congruent to angle . Why ? Because each | |
| 00:19 | angle is marked with one arc , and angle are | |
| 00:24 | is congruent to angle Z . Because each angle is | |
| 00:28 | marked with two arcs and so on . Similarly side | |
| 00:34 | R . S . Is congruent to sides Ey , | |
| 00:38 | because each side is marked with one hash mark and | |
| 00:43 | so on . Since all corresponding parts of these two | |
| 00:48 | triangles are congruent , we know that the triangles themselves | |
| 00:53 | are congruent . However , we need to be careful | |
| 00:57 | when making are congruent statement . In other words , | |
| 01:02 | if we name the first triangle as triangle R . | |
| 01:06 | S . T . The temptation is to say right | |
| 01:10 | away that triangle R . S . T is congruent | |
| 01:15 | to triangle X . Y . Z . However , | |
| 01:19 | when stating the two triangles are congruent always make sure | |
| 01:25 | that the corresponding parts are matched up . So in | |
| 01:29 | this example , since angle are corresponds to angle Z | |
| 01:36 | , angle S corresponds to angle why , and angle | |
| 01:40 | T corresponds to angle X . We say that triangle | |
| 01:46 | R S . T . Is congruent to triangle Z | |
| 01:51 | , Y . X , not triangle X , Y | |
| 01:54 | . Z . Yeah . Yeah . Mhm . So | |
| 02:11 | remember when making a congruent statement about two figures , | |
| 02:16 | be careful with how you order your vertex is . |
DESCRIPTION:
This lesson covers dividing integers. Students learn to divide integers using the following rules. A positive divided by a positive equals a positive. For example, +20 divided by +2 = +10. A positive divided by a negative equals a negative. For example, +20 divided by -2 = -10. A negative divided by a positive equals a negative. For example, -20 divided by +2 = -10. And a negative divided by a negative equals a positive. For example, -20 divided by -2 = +10. In other words, if the signs are the same, the quotient is positive, and if the signs are different, the quotient is negative. Note that any integer divided by zero is undefined. For example, +4 divided by 0 = undefined. And zero divided by any integer (other than zero) is zero. For example, 0 divided by +4 = 0.
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