Mathematics

# How many pairs of adjacent angles, in all, can you name in Fig.

10

##### SOLUTION
Number of pair of adjacent angles, from the figure, are :
$\angle EOC$ and $\angle DOC$
$\angle EOD$ and $\angle DOB$
$\angle DOC$ and $\angle COB$
$\angle EOD$ and $\angle DOA$
$\angle DOC$ and $\angle COA$
$\angle BOC$ and $\angle BOA$
$\angle BOA$ and $\angle BOD$
$\angle BOA$ and $\angle BOE$
$\angle EOC$ and $\angle COA$
$\angle EOC$ and $\angle COB$
$\therefore$  There are $10$ pairs of adjacent angles.

You're just one step away

One Word Medium Published on 09th 09, 2020
Questions 120418
Subjects 10
Chapters 88
Enrolled Students 87

#### Realted Questions

Q1 Subjective Medium
In three line segments $OA, OB$ and $OC$ points $L, M, N$ respectively are so chosen that $LM$ is parallel to $AB$ and $MN$ is parallel to $BC$ but neither of $L, M, N$ nor of $A, B, c$ are collinear. Show that $LN$ is parallel to $AC$.

Asked in: Mathematics - Straight Lines

1 Verified Answer | Published on 17th 08, 2020

Q2 Single Correct Medium
An angle which measures more than $\displaystyle 0^{o}$ and less than $\displaystyle 90^{o}$ is called:
• A. obtuse
• B. acute
• C. right
• D. none

Asked in: Mathematics - Lines and Angles

1 Verified Answer | Published on 09th 09, 2020

Q3 Single Correct Medium
In given figure find $x$
• A. $120^{0}$
• B. $130^{0}$
• C. $140^{0}$
• D. $110^{0}$

Asked in: Mathematics - Lines and Angles

1 Verified Answer | Published on 09th 09, 2020

Q4 Single Correct Medium
In the above figure, $ABC$ is a right-angled triangle, right angled at $B$ and $AD$ is the external bisector of angle $A$ of triangle $ABC$.

Find $AD$, if $AC= 17 \,cm$ and $BC = 8 \,cm$.
• A. $15 \,cm$
• B. $23 \,cm$
• C. $60 \,cm$
• D. $15\sqrt{17} cm$

Asked in: Mathematics - Lines and Angles

1 Verified Answer | Published on 09th 09, 2020

Q5 Single Correct Medium
Based on the given figure, which of the following statements is true?
• A. $\angle\, 5$ and $\angle\, 7$ are supplementary angles.
• B. $\angle\, 7\, =\, 55^\circ$
• C. $\angle\, 8$ and $\angle\, 1$ are corresponding angles.
• D. $\angle\, 4$ and $\angle\, 5$ are alternate angles.

Asked in: Mathematics - Lines and Angles

1 Verified Answer | Published on 09th 09, 2020