R S Aggarwal and Veena Aggarwal Solutions for Exercise 3: MULTIPLE-CHOICE QUESTIONS (MCQ)

In $∆ABC, AB=AC$ and $\angle B={50}^{\mathrm{o}}$. Then $\angle A=$?

In $∆ABC, BC=AB$ and $\angle B=80°$ . Then $\angle A=$?

In $∆ABC, \angle C=\angle A, BC=4 \mathrm{cm}$ and $AC=5 \mathrm{cm}$. Then $AB=$?

Two sides of a triangle are of length $4 \mathrm{cm}$ and $2.5 \mathrm{cm}$. The length of the third side of the triangle is $x \mathrm{cm}$. So, $x$ cannot be

In $△ABC$, $\angle A=40°$ and $\angle B=60°$. Then, the longest side of $△ABC$ is

If the altitudes from two vertices of a triangle to the opposite sides are equal then the triangle is

Which is true?

Drawing a $∆\mathrm{ABC}$ with $\mathrm{AB}=3 \mathrm{cm}$, $\mathrm{BC}=4 \mathrm{cm}$ and $\mathrm{CA}=7 \mathrm{cm}$ is _____. (possible/not possible)