Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 9 Answered

how to construct a triangle when perimeter is given
Asked by | 08 Mar, 2013, 09:43: PM
answered-by-expert Expert Answer

Given          : In ΔABC, AB+BC+CA = 10.5 cm, angleB = 70° & angleC = 90°.

          Required      : To construct the ΔABC.

          Steps of Construction:

  1. Draw DE = 10.5 cm.
  2. At D, construct angleEDP = 1/2 of 70° = 35° and at E, construct angleDEQ = 1/2 of 90° = 45o.
  3. Let DP and EQ meet at A.
  4. Draw perpendicular bisector of AD to meet DE at B.
  5. Draw perpendicular bisector of AE to meet DE at C.
          Join AB and AC. Then, ABC is the required triangle.
Answered by | 09 Mar, 2013, 09:46: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 9 - Maths
A,B and C are three point on a circle. Prove that the perpendicular bisector of AB , BC and CA are concurrent
Asked by vihankansara6thc37 | 27 Nov, 2023, 11:05: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
construct a triangle ABC in which BC is equal to 7 cm angle b is equal to 75 and angle b + angle c is equal to 13 cm
Asked by heamlatasinghal | 07 Dec, 2021, 10:24: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
Construct a triangle ABC where BC=5cm,angle B=30°and AC-BC=2cm.
Asked by swatipuspapatel | 11 Feb, 2021, 07:39: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
construct the angles of following 30 degree, 22 half degree and 15 degree
Asked by bhawindersaini | 10 Aug, 2020, 06:58: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
Prove that through a given point, we can draw only one perpendicular to a given line
Asked by dkmaradona8051 | 05 Aug, 2020, 09:44: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
Construct triangleABC in which AB=5cm,AC–BC=2.5 angle AngleA=30°
Asked by snrsunny1177 | 20 Jan, 2020, 06:35: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
How the construction is done     
Asked by Aniskhatib999 | 04 Jan, 2020, 05:59: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
sir you did not teach how to construct triangles with given base,base angle and perimeter
Asked by vneenahb | 13 Nov, 2019, 02:51: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
construct a ∆ABC whose perimeter is 10.4cm base angle are 45 and 120
Asked by pk6686742 | 06 Nov, 2019, 08:34: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 9 - Maths
The perimeter of the triangle is 14.4 cm and the ratio of the length of its side is 2 is to 3 is to 4 construct a triangle
Asked by gawaliabhas2019 | 27 Sep, 2019, 10:18: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×