GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 20 Jan 2019, 22:12

### 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 January
PrevNext
SuMoTuWeThFrSa
303112345
6789101112
13141516171819
20212223242526
272829303112
Open Detailed Calendar
• ### GMAT Club Tests are Free & Open for Martin Luther King Jr.'s Birthday!

January 21, 2019

January 21, 2019

10:00 PM PST

11:00 PM PST

Mark your calendars - All GMAT Club Tests are free and open January 21st for celebrate Martin Luther King Jr.'s Birthday.
• ### FREE Quant Workshop by e-GMAT!

January 20, 2019

January 20, 2019

07:00 AM PST

07:00 AM PST

Get personalized insights on how to achieve your Target Quant Score.

# The vertex angle of an isosceles is p degrees. How many degrees are th

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 52297
The vertex angle of an isosceles is p degrees. How many degrees are th  [#permalink]

### Show Tags

19 Mar 2018, 00:22
00:00

Difficulty:

25% (medium)

Question Stats:

82% (00:38) correct 18% (00:52) wrong based on 33 sessions

### HideShow timer Statistics

The vertex angle of an isosceles is p degrees. How many degrees are there in one of the base angles?

A. 180 - p
B. 90 - p
C. 180 - 2p
D. 180 - p/2
E. 90 - p/2

_________________
examPAL Representative
Joined: 07 Dec 2017
Posts: 868
Re: The vertex angle of an isosceles is p degrees. How many degrees are th  [#permalink]

### Show Tags

19 Mar 2018, 00:25
Bunuel wrote:
The vertex angle of an isosceles is p degrees. How many degrees are there in one of the base angles?

A. 180 - p
B. 90 - p
C. 180 - 2p
D. 180 - p/2
E. 90 - p/2

As the calculation required is straightforward, we'll just do it.
This is a Precise approach.

Since the vertex degree is p, then the other two angles (the base angles) sum to 180 - p.
Since the base angles of an isosceles are equal, each is equal to (180 - p)/2 = 90 - p/2

_________________
Math Expert
Joined: 02 Sep 2009
Posts: 52297
Re: The vertex angle of an isosceles is p degrees. How many degrees are th  [#permalink]

### Show Tags

19 Mar 2018, 00:29
Bunuel wrote:
The vertex angle of an isosceles is p degrees. How many degrees are there in one of the base angles?

A. 180 - p
B. 90 - p
C. 180 - 2p
D. 180 - p/2
E. 90 - p/2

For other subjects:
ALL YOU NEED FOR QUANT ! ! !
_________________
Senior Manager
Joined: 07 Jul 2012
Posts: 377
Location: India
Concentration: Finance, Accounting
GPA: 3.5
Re: The vertex angle of an isosceles is p degrees. How many degrees are th  [#permalink]

### Show Tags

19 Mar 2018, 03:41
Vertex angle= p
Sum of other two angles= 180-p

Triangle is isosceles. So other two angles are equal.

Measure of one angle= $$\frac{180-p}{2}$$= 90-$$\frac{p}{2}$$

_________________

Kindly hit kudos if my post helps!

Target Test Prep Representative
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2830
Re: The vertex angle of an isosceles is p degrees. How many degrees are th  [#permalink]

### Show Tags

20 Mar 2018, 15:53
Bunuel wrote:
The vertex angle of an isosceles is p degrees. How many degrees are there in one of the base angles?

A. 180 - p
B. 90 - p
C. 180 - 2p
D. 180 - p/2
E. 90 - p/2

Since the base angles of an isosceles triangle are equal, we can let b = the measure of a base angle of the triangle and create the equation:

2b + p = 180

2b = 180 - p

b = (180 - p)/2

b = 90 - p/2

_________________

Jeffery Miller

GMAT Quant Self-Study Course
500+ lessons 3000+ practice problems 800+ HD solutions

Re: The vertex angle of an isosceles is p degrees. How many degrees are th &nbs [#permalink] 20 Mar 2018, 15:53
Display posts from previous: Sort by