In chapter 8, we learned about THE NUMBER PLANE. It's introducing about coordinates. By looking in both side, such s scatter diagram. With X and Y axis that I will explain below:
coordinate have two axis there are x Axis and y Axis and 4 parts. it shown in the picture below:
<<<< ------- as you can see that it has 2 axis, x Axis and y Axis. there are also 4 parts of it, 1st quadrant, 2nd quadrant, 3rd quadrant and 4th quadrant.
so, this is one of the example how to do it. So, the first one is
(1, 2) the first thing to do is to find the x axis, the x axis is always at the front so it is 1. Same like the y axis, but the differences is the y axis is at the back so it is 2. the next step is to find the position of the coordinate. the x axis is 1 and remember that x axis is always the horizontal line and the opposite, the y axis is always vertical line. then find the position line that have been numbered.
The next chapter, is chapter 10 (reasoning in geometry). In this chapter, we learned about the basic of angels and lines. I have learned new things, that line did not have any end.
Angle is an exact location in space or the basic element of geometric figure. Angle can be measure by a protecter, there are several types of angles:
- obtuse angle or a angle that is more than 90˚
- acute angle or a angle that is less than 90˚
- right angle or a angle that is exactly 90˚( in this terms to mark it, it use a square mark)
There are other terms that is connected to angles:
- line is a collection of points going on and on with out limits in both side or there are no end point.
- line segment is a part of line. in has two end point and includes all the points between those end point.
- ray is a part of line, it has one end point but one side of it it has no limits.
- concurrent line is three or more line passing through a common point.
- collinear is 4 points that lie in a straight line.
The relation ship of 2 angles (parallel and transversal lines)
coordinate have two axis there are x Axis and y Axis and 4 parts. it shown in the picture below:
<<<< ------- as you can see that it has 2 axis, x Axis and y Axis. there are also 4 parts of it, 1st quadrant, 2nd quadrant, 3rd quadrant and 4th quadrant.(1, 2) the first thing to do is to find the x axis, the x axis is always at the front so it is 1. Same like the y axis, but the differences is the y axis is at the back so it is 2. the next step is to find the position of the coordinate. the x axis is 1 and remember that x axis is always the horizontal line and the opposite, the y axis is always vertical line. then find the position line that have been numbered.
The next chapter, is chapter 10 (reasoning in geometry). In this chapter, we learned about the basic of angels and lines. I have learned new things, that line did not have any end.
Angle is an exact location in space or the basic element of geometric figure. Angle can be measure by a protecter, there are several types of angles:
- obtuse angle or a angle that is more than 90˚
- acute angle or a angle that is less than 90˚
- right angle or a angle that is exactly 90˚( in this terms to mark it, it use a square mark)
There are other terms that is connected to angles:
- line is a collection of points going on and on with out limits in both side or there are no end point.
- line segment is a part of line. in has two end point and includes all the points between those end point.
- ray is a part of line, it has one end point but one side of it it has no limits.
- concurrent line is three or more line passing through a common point.
- collinear is 4 points that lie in a straight line.
- perpendicular lines is spiral intersecting lines that form right angle (square corner) where they intersect.
- parallel lines is lines which never intersect with each other.
- intersection lines is lines that will always intersect with each other
The relation ship of 2 angles (parallel and transversal lines)
- Corresponding or f angle is when two parallel lines cut by a third line, or it can be shaped like a F letter.
- Alternatif line or z line has two types alternate interior; on opposites sides of the line inside, alternate exterior opposites sides of the line m and outside the line k and l
- Co interior that is forming a c letter or a angle that is equal when they are facing each other.
MATH
READING MATHEMATICS
10:07
:)
NAME: JESSIECA JUNESHA
GRADE: 7 ASIA
QUESTIONS:
1. Why do angle point have a sum of 360 degree?
2. Why are vertically opposite angles are equal?
3. Why are opposite angles of parallelogram equal?
4. Why is the angle sum of triangle 180 degree?
5. Why is the exterior angle of a triangle 180 degree?
6. Why is the angle sum of a quadrilateral 360 degree?
ANSWERS:
1. Because angle are only can form a circle after drawing it, if we use compass to draw a circle around it will prove it. A circle is equal to 360 degree
2. Because when we use our hand to close on side it will always add up to 180 degree or a straight line.
3. because when we draw a line across the parallelogram inside it, when we measure it will be the same degree with the angle across it.
4. Because when we add up every single angle it will become 180 degree, other the other word is “ a + b + c = 180 degree. The other way is when we make a triangle and cut lout the angles and arrange it with angle and angle it will add up to 180 degree or a straight line.
5. Because the exterior is always the same to the sum of the interior or remote opposite angles.
6. Because when we add every angle together the sun of it all be 360 degree. If there are two shape in one shape, we need to add 1 shape one by one and then ad them together
