50070

Question

An isosceles triangle is drawn below.



What is the size of the angle ∠\angleABCABC?

Worked Solution

Since base angles are equal:
∠\angleABCABC = 12×\dfrac{1}{2} \times (180 −- 99)
= 12\dfrac{1}{2} x 81
= {{correctAnswer}}

Variant 0

DifficultyLevel

613

Question

An isosceles triangle is drawn below.



What is the size of the angle ∠\angleABCABC?

Worked Solution

Since base angles are equal:
∠\angleABCABC = 12×\dfrac{1}{2} \times (180 −- 99)
= 12\dfrac{1}{2} x 81
= 40.5°

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
correctAnswer
40.5°

Answers

Is Correct?Answer
x

60°

x

49.5°

x

45°

✓

40.5°