Circle Properties And Coordinate Geometry I

Reviewed by Editorial Team
The ProProfs editorial team is comprised of experienced subject matter experts. They've collectively created over 10,000 quizzes and lessons, serving over 100 million users. Our team includes in-house content moderators and subject matter experts, as well as a global network of rigorously trained contributors. All adhere to our comprehensive editorial guidelines, ensuring the delivery of high-quality content.
Learn about Our Editorial Process
| By Yonghs
Y
Yonghs
Community Contributor
Quizzes Created: 2 | Total Attempts: 2,926
| Attempts: 985 | Questions: 10
Please wait...
Question 1 / 10
0 %
0/100
Score 0/100
1.

Explanation

OBC=OAC=90 (tangent perpendicular to radius)
AOB=360-180-60 (angle sum of quad)

Submit
Please wait...
About This Quiz
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... see morex=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.
see less

2.

Explanation

AC=AB (isos triangle)
ABC=(180-60)/2

Submit
3.

Explanation

(2+12)/2=7
(-5+13)/2=4

Submit
4.

Explanation

DAB=68 (alt seg thm)
DCB=180-68 (opp angles of cyclic quad)

Submit
5.

Explanation

BAE=ABE=64(alt seg thm)
AEB=180-64-64(angle sum of triangle)

Submit
6.

Explanation

DAB=68(alt seg thm)
BAE=64(alt seg thm)

Submit
7.

Explanation

pythagoras'
sqrt (8^2+6^2)
13-5=8
6-0=6

Submit
8.

Explanation

not-available-via-ai

Submit
9.

Explanation

y=3x+c
5=3(1)+c
c=2

Submit
10.

Explanation

grad = 2
perpendicular grad = -1/2
y= -1/2 x + c
-1= -1/2 (-4) + c
c = -1 - 2

Submit
View My Results

Quiz Review Timeline (Updated): Mar 21, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jun 06, 2010
    Quiz Created by
    Yonghs
Cancel
  • All
    All (10)
  • Unanswered
    Unanswered ()
  • Answered
    Answered ()
Alert!

Advertisement