Triangles MCQs with Answers

What is the sum of the interior angles of a triangle?

• A.$270^\circ$
• B.$360^\circ$
• C.$90^\circ$
• D.$180^\circ$

In $\triangle PQR$, the right bisector of $PQ$ passes through its _.

• A.Centroid of the triangle
• B.Vertex $R$
• C.Midpoint of $PQ$
• D.Circumcenter of the triangle

A triangle cannot be drawn with which of the following three sides?

• A.$3\text{ m},\ 4\text{ m},\ 5\text{ m}$
• B.$5\text{ m},\ 12\text{ m},\ 13\text{ m}$
• C.$3\text{ m},\ 4\text{ m},\ 8\text{ m}$
• D.$6\text{ m},\ 8\text{ m},\ 10\text{ m}$

If two angles in a triangle are $45^\circ$ and $55^\circ$, what is the third angle?

• A.$70^\circ$
• B.$80^\circ$
• C.$90^\circ$
• D.$100^\circ$

Past Paper MCQ

If the height of a triangle is 4 cm less than its base, and the hypotenuse is 10 cm, find the other two sides.

• A.Base = $6$ cm, Height = $8$ cm
• B.Base = $10$ cm, Height = $6$ cm
• C.Base = $8$ cm, Height = $4$ cm
• D.Base = $12$ cm, Height = $8$ cm

If a right-angled triangle has legs of length $6$ cm and $8$ cm, the length of the hypotenuse is?

• A.$9$ cm
• B.$10$ cm
• C.$12$ cm
• D.$14$ cm

One side of an equilateral triangle is $10$. What are the other two sides?

• A.$5$ and $5$
• B.$10$ and $10$
• C.$10$ and $15$
• D.Cannot be determined

A triangle that has no equal sides and no equal angles is known as?

• A.Right Triangle
• B.Isosceles Triangle
• C.Equilateral Triangle
• D.Scalene Triangle

What is the name of a triangle with two sides of equal length?

• A.Equilateral triangle
• B.Isosceles triangle
• C.Scalene triangle
• D.Right-angled triangle

The top of a $15$-metre-high tower makes an angle of elevation of $60^\circ$ with the bottom of an electric pole and an angle of elevation of $30^\circ$ with the top of the pole. What is the height of the electric pole?

• A.$5$ metres
• B.$10$ metres
• C.$12$ metres
• D.$15$ metres