Construct a triangle ABC in which AB=AC=5.2cm and angle A= 120 degree. Draw Ad perpendicular to BC. Use ruler and compass.

  1. 👍 0
  2. 👎 2
  3. 👁 626
  1. if you can construct a 60° angle, you can do one of 120°.

    One of the earliest constructions is a perpendicular bisector, so I'm sure you can do that.

    So, draw your 120° angle, label it A, and you have the angle bisector already done.

    Mark off AB and AC and connect B and C to form BC.

    Your angle bisector is also the perp. bisector of BC.

    1. 👍 0
    2. 👎 2

Respond to this Question

First Name

Your Response

Similar Questions

  1. Geometry

    Let ABC be any triangle. Equilateral triangles BCX, ACY, and BAZ are constructed such that none of these triangles overlaps triangle ABC. a) Draw a triangle ABC and then sketch the remainder of the figure. It will help if

  2. maths-urgently needed

    In right angled triangle ABC angle B=90 degree and AB= root 34 unit. The coordinates of point B and Care (4,2)and (-1,y) respectively. If area of triangle ABC = 17 sq.units, then find value of y.

  3. geometry

    In triangle ABC, BC=40m , AB=50m and Angle A=53 degree. Determine the area of a triangle.

  4. geometry

    1. Triangle ABC has a 63.0-degree angle at B, and side AC is 13.6 cm long. What is the diameter of the circle circumscribed about ABC? 2. And: Given any triangle ABC, with sides a, b, and c opposite angles A, B, and C,

  1. PLEASE HELP!!!!! (Right Triangle Question)

    Point N is on hypotenuse BC of triangle ABC such than angle CAN is 45 degrees. If AC=8 and AB=6, find AN. I did Pythagorean Theorem for triangle ABC, and hypotenuse BC will be 10. I don't know how to continue from there. Oh, I'm

  2. Geometry

    using a ruler and a pair of compasses only. construct triangle.ABC in which angle BAC=45 °.Then |AB|=7cm.then |AC|=9cm.locate P into triangle ABC which is 5cm from A and B equidistant from B and C. find PB.

  3. Maths Constructions

    How to construct a Triangle ABC in which base BC=4.8 cm, Angle B=90° and hypotenuse AC=6.2 cm.

  4. Precalculus

    In most geometry courses, we learn that there's no such thing as "SSA Congruence". That is, if we have triangles ABC and DEF such that AB = DE, BC = EF, and angle A = angle D, then we cannot deduce that ABC and DEF are congruent.

  1. math

    triangle abc angle A+B=166 degree and angle b+c=126 degree find the measure of each angle of the triangle

  2. Mathematics

    Construct triangle ABC in which AB is 7cm AC is 9.5cm and is 120.measure BC.

  3. math

    Construct a right triangle ABC such that BC =4 cm and hypotenuse makes an angle of 30 degree at B. verify that AB =2 AC



You can view more similar questions or ask a new question.