the edge
The distance from one side to the other
passing through the centreThe red line
The blue line
Tangent Degree Chord Sector Segment Diameter Sphere Concentric Arc
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Презентация на тему Circle theorems
Содержание
- 2. Name these FeaturesThe distance from the centre
- 3. The distance from the centre to the
- 4. A triangle drawn from the two ends
- 5. Tangent-Radius meet at90°90°
- 6. Isosceles triangle formed by two radiiWhy isosceles? Both radii which means they’re the same length
- 7. Chord Bisector is a DIAMETERA chord is
- 8. Angles in the same segment are equalAll
- 9. Angles at the centre is twice the
- 10. A cylclic quadrilateral is a 4-sided shape
- 11. Example 1
- 12. Скачать презентацию
- 13. Похожие презентации
Name these FeaturesThe distance from the centre to the edgeThe distance from one side to the other passing through the centreThe red line The blue lineTangent Degree Chord Sector Segment Diameter Sphere Concentric Arc
Слайд 2
Name these Features
The distance from the centre to
the edge
passing through the centreThe red line
The blue line
Слайд 3
The distance from the centre to the edge
RADIUS
The distance from one side to the other passing
through the centre DIAMETERThe red line TANGENT is a line that touches the edge of a circle
The blue line CHORD any line that across a circle
Where can you see i) a segment ii) a sector iii) an arc?
Sector
Segment
An ARC is the name for part of the circumference
Слайд 4 A triangle drawn from the two ends of
a diameter will ALWAYS make an angle 90° where
it hits the edge of the circle.Angle in a semi-circle = 90°
Слайд 6
Isosceles triangle formed by two radii
Why isosceles? Both
radii which means they’re the same length
Слайд 7
Chord Bisector is a DIAMETER
A chord is any
line drawn across a circle. No matter where you
draw a chord, the line that cuts it exactly in half is (90°) will go through the centre of the circle
Слайд 8
Angles in the same segment are equal
All angles
drawn from a chord will have the same angle
where they touch the circle. Also the two angles on opposite sides of the chord add up to 180°a + b = 180°
Слайд 9 Angles at the centre is twice the angle
at the edge
2a
a
The angles made at the centre
of the circle is double the angle made at the edge of the circle from the same two points (two ends of the chord)Слайд 10 A cylclic quadrilateral is a 4-sided shape with
every corner touching the circle. Both pairs of opposite
pairs of angles add up to 180°Opposite angles in a cyclic quadrilateral add up to 180°
b
c
d
a
