AnglesThe space between two connecting lines.
Acute
An angle that is less than 90°.
Obtuse
An angle that is greater then 90° and less than 180°
Right
An angle that is exactly 90°
Straight
An angle that is exactly 180°
Angle Bisector
The line that divides an angle into equal parts.
(equal angles are marked with the same mark)
Their are 3 ways to make an angle bisector.
1.a) Fold Paper until the 2 lines on your angle meet.
b) Use a ruler to draw a line on a crease.
2.a)Use a compass to make an arc from the vertex that crosses both arms. Label them x and y
b)Make an arc from point x and point y. They must be equal in size.
c) Draw a line from point B to the between the meter section.
3.a)Use a protractor.
(angle)
b)Measure the < D E F.
^
|
140°
c)Divide your measurement by 2. 140÷2= 70°.
d)Make a mark at 70° using a protractor. Label it Q.
e)Join point Q with the vertex with a straight line.
1. Make a 68
° angle. Then draw the angle bisector using 2 methods.
2.How could you divide an angle into 4 equal parts ?
You can find out the angle and then divide it by 4.
3.Has each angle been bisected? How do you know ?
No because A is cut in half and B isn't cut into equal parts.
4.What are 2 examples of angle bisectors in the real world?
Pizza and Pie.
Here's a good link that could help you make Angle Bisectors.
An angle that is greater then 90° and less than 180°
An angle that is exactly 90°
StraightAn angle that is exactly 180°
Angle BisectorThe line that divides an angle into equal parts.
(equal angles are marked with the same mark)
Their are 3 ways to make an angle bisector.1.a) Fold Paper until the 2 lines on your angle meet.
b) Use a ruler to draw a line on a crease.
2.a)Use a compass to make an arc from the vertex that crosses both arms. Label them x and y
b)Make an arc from point x and point y. They must be equal in size.
c) Draw a line from point B to the between the meter section.
3.a)Use a protractor.(angle)
b)Measure the < D E F.
^|
140°
c)Divide your measurement by 2. 140÷2= 70°.
d)Make a mark at 70° using a protractor. Label it Q.
e)Join point Q with the vertex with a straight line.
1. Make a 68° angle. Then draw the angle bisector using 2 methods.2.How could you divide an angle into 4 equal parts ?
You can find out the angle and then divide it by 4.
3.Has each angle been bisected? How do you know ?
No because A is cut in half and B isn't cut into equal parts.4.What are 2 examples of angle bisectors in the real world?
Pizza and Pie.
Here's a good link that could help you make Angle Bisectors.
