Circle Properties And Coordinate Geometry I
(206).jpg "Circle Properties And Coordinate Geometry I - Quiz")
Recall:
tangent perpendicular to radius.
tangents meet at a point equidistant from circumference. (isos. Triangle)
alt seg thm
angle at ctr = 2 angle at circumf. . .
y-axis is x=0. So, lines parallel to y axis are x =? . . .
x-axis is y=0.
parallel lines have same gradient.
product of gradient of perpendicular lines is -1.
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C. CExplanation
OBC=OAC=90 (tangent perpendicular to radius)
AOB=360-180-60 (angle sum of quad)Rate this question:
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D. DExplanation
DAB=68 (alt seg thm)
DCB=180-68 (opp angles of cyclic quad)Rate this question:
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A. AExplanation
DAB=68(alt seg thm)
BAE=64(alt seg thm)Rate this question:
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C. CExplanation
BAE=ABE=64(alt seg thm)
AEB=180-64-64(angle sum of triangle)Rate this question:
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B. BExplanation
AC=AB (isos triangle)
ABC=(180-60)/2Rate this question:
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D. DExplanation
pythagoras'
sqrt (8^2+6^2)
13-5=8
6-0=6Rate this question:
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D. DExplanation
(2+12)/2=7
(-5+13)/2=4Rate this question:
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A. AExplanation
y=3x+c
5=3(1)+c
c=2Rate this question:
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D. DExplanation
grad = 2
perpendicular grad = -1/2
y= -1/2 x + c
-1= -1/2 (-4) + c
c = -1 - 2Rate this question:
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Mar 21, 2023Quiz Edited by
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Jun 06, 2010Quiz Created by
Yonghs