Question

4. Construct an isosceles AABC, such that:
(i) Base BC = 5 cm and one of the base angles is 60° find the third angle (vertex angle) and the measure of other two sides

Answer 1

Construction:

draw a line bc=5 cm then construct an angle of 60 degree in both side of the line.

these 2 rays meet in a point which is 'A'

Why:

isosceles triangle has 2 sides equal and angles opposite to it are also equal. (60 degrees each side)

To find the 3rd side:

after constructing the triangle measure the line AC or AB (they both are equal)

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