M.C.Q

Questions · Page 3 of 3

MCQ 1011 Mark

An exterior angle of a triangle is $108^{\circ}$ and its interior opposite angles are in the ratio 4:5. The angles of the triangle are

✓
$48^{\circ}, 60^{\circ}, 72^{\circ}$
B
$50^{\circ}, 60^{\circ}, 70^{\circ}$
C
$52^{\circ}, 56^{\circ}, 72^{\circ}$
D
$42^{\circ}, 60^{\circ}, 76^{\circ}$

Answer

Correct option: A.

$48^{\circ}, 60^{\circ}, 72^{\circ}$

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MCQ 1021 Mark

In $\triangle A B C$, if $\angle A=100^{\circ}, A D$ bisects $\angle A$ and $A D \perp B C$. Then, $\angle B=$

A
$50^{\circ}$
B
$90^{\circ}$
✓
$40^{\circ}$
D
$100^{\circ}$

Answer

Correct option: C.

$40^{\circ}$

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MCQ 1031 Mark

If the sides of a triangle are produced in order, then the sum of the three exterior angles so formed is

A
$90^{\circ}$
B
$180^{\circ}$
C
$270^{\circ}$
✓
$360^{\circ}$

Answer

Correct option: D.

$360^{\circ}$

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MCQ 1041 Mark

In a triangle, an exterior angle at a vertex is $95^{\circ}$ and its one of the interior opposite angle is $55^{\circ}$ then the measure of the other interior angle is

A
$55^{\circ}$
B
$85^{\circ}$
✓
$40^{\circ}$
D
$9.0^{\circ}$

Answer

Correct option: C.

$40^{\circ}$

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MCQ 1051 Mark

In $\triangle A B C, \angle B=\angle C$ and ray $A X$ bisects the exterior angle $\angle D A C$. If $\angle D A X=70^{\circ}$, then $\angle A C B=$

A
$35^{\circ}$
B
$90^{\circ}$
✓
$70^{\circ}$
D
$55^{\circ}$

Answer

Correct option: C.

$70^{\circ}$

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MCQ 1061 Mark

Side BC of a triangle ABC has been produced to a point D such that $\angle A C D=120^{\circ}$. If $\angle B=\frac{1}{2} \angle A$, then $\angle A$ is equal to