It is currently 22 Jun 2017, 17:19

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# If a and b are complementary angles (they sum to 90°), name three ot

Author Message
TAGS:

### Hide Tags

Senior Manager
Joined: 10 Nov 2010
Posts: 262
Location: India
Concentration: Strategy, Operations
GMAT 1: 520 Q42 V19
GMAT 2: 540 Q44 V21
WE: Information Technology (Computer Software)
If a and b are complementary angles (they sum to 90°), name three ot [#permalink]

### Show Tags

24 Feb 2011, 10:07
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

### HideShow timer Statistics

If a and b are complementary angles (they sum to 90°), name three other pairs of complementary angles.

Attachment:

complementary.JPG [ 21.97 KiB | Viewed 1326 times ]

_________________

The proof of understanding is the ability to explain it.

Math Forum Moderator
Joined: 20 Dec 2010
Posts: 2010
Re: If a and b are complementary angles (they sum to 90°), name three ot [#permalink]

### Show Tags

24 Feb 2011, 10:23
Precisely as mentioned in the example; Pair of angles that sum to $$90^{\circ}$$ is called complementary. Pair of angles that sum to $$180^{\circ}$$ are called supplementary.

e.g.
$$\angle{a}=45^{\circ}$$
What will be its complementary angle: Clearly 90-45=$$45^{\circ}$$

$$\angle{a}=1^{\circ}$$
What will be its complementary angle: Clearly 90-1=$$89^{\circ}$$

$$\angle{a}=120^{\circ}$$
What will be its supplementary angle: Clearly 180-120=$$60^{\circ}$$

$$\angle{a}=1^{\circ}$$
What will be its supplementary angle: Clearly 180-1=$$179^{\circ}$$

; For this figure;
a and b are complementary angles;
Means a+b=90;

e+d will also be 90(complementary). If two lines intersect each other the opposite angles will always be equal.
In this figure; "e+d" is the opposite to "a+b"

a+e will also be complementary. (a+b is complementary; and e=b; opposite angles)
Likewise
b+d will also be complementary. (b+a is complementary; and a=d; opposite angles)
_________________
Re: If a and b are complementary angles (they sum to 90°), name three ot   [#permalink] 24 Feb 2011, 10:23
Similar topics Replies Last post
Similar
Topics:
17 The sum of three integers A, B and C is 120. A is one third of the su 5 12 Apr 2017, 20:30
10 In the figure above, angle BCD measures 90 degrees, angle ABC measures 7 18 Nov 2016, 05:04
12 If a, b, and c are three different positive integers whose sum is prim 10 18 Jun 2017, 02:46
9 Train A and B, 455 miles apart, are traveling toward each ot 7 02 Mar 2016, 19:22
Since 1 appears exactly three times, we can solve for the ot 1 07 Apr 2013, 01:19
Display posts from previous: Sort by

# If a and b are complementary angles (they sum to 90°), name three ot

 Powered by phpBB © phpBB Group and phpBB SEO Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.