A P Singh Solutions for Chapter: Triangles, Exercise 4: MCQs (MULTIPLE CHOICE QUESTIONS)

If the ratio of the corresponding sides of two similar triangles is $2:3$, then the ratio of their corresponding altitudes is

$\mathrm{A}\mathrm{B}\mathrm{C}$ and $\mathrm{D}\mathrm{E}\mathrm{F}$ are similar triangles such that $\mathrm{\angle }\mathrm{A}=47°$ and $\mathrm{\angle }\mathrm{E}=83°$, then $\mathrm{\angle }\mathrm{C}$ is:

$∆\mathrm{A}\mathrm{B}\mathrm{C}~∆\mathrm{P}\mathrm{Q}\mathrm{R}$. $\mathrm{M}$ is the mid-point of $\mathrm{B}\mathrm{C}$ and $\mathrm{N}$ is the mid-point of $\mathrm{Q}\mathrm{R}$. If the area of $∆\mathrm{ABC}=100 \mathrm{sq}. \mathrm{cm}$ and the area of $∆\mathrm{PQR}=144 \mathrm{sq}. \mathrm{cm}$. If $\mathrm{A}\mathrm{M}=4 \mathrm{c}\mathrm{m}$ then $\mathrm{P}\mathrm{N}$ is:

$∆\mathrm{A}\mathrm{B}\mathrm{C}~∆\mathrm{P}\mathrm{Q}\mathrm{R}$. If $\mathrm{a}\mathrm{r}\left(\mathrm{A}\mathrm{B}\mathrm{C}\right)=2.25 {\mathrm{m}}^2, \mathrm{a}\mathrm{r}\left(\mathrm{P}\mathrm{Q}\mathrm{R}\right)=6.25 {\mathrm{m}}^2, \mathrm{P}\mathrm{Q}=0.5 \mathrm{m}$, then length of $\mathrm{A}\mathrm{B}$ is:

In $∆\mathrm{L}\mathrm{M}\mathrm{N}, \mathrm{\angle }\mathrm{L}=60°, \mathrm{\angle }\mathrm{M}=50°$. If $∆\mathrm{L}\mathrm{M}\mathrm{N}~∆\mathrm{P}\mathrm{Q}\mathrm{R}$, then the value of $\mathrm{\angle }\mathrm{R}$ is

Which of the following are not the sides of a right triangle?

The area of two similar triangles $\mathrm{ABC}$ and $\mathrm{PQR}$ are $25 {\mathrm{cm}}^2$ and $49 {\mathrm{cm}}^2$. If $\mathrm{QR}=9.8 \mathrm{cm}$, then $\mathrm{BC}$ is:

It is given that $∆\mathrm{K}\mathrm{L}\mathrm{M}~∆\mathrm{A}\mathrm{B}\mathrm{C}$. If $\mathrm{a}\mathrm{r}\left(∆\mathrm{K}\mathrm{L}\mathrm{M}\right)=9 \mathrm{c}{\mathrm{m}}^2, \mathrm{a}\mathrm{r}\left(∆\mathrm{A}\mathrm{B}\mathrm{C}\right)=16 \mathrm{c}{\mathrm{m}}^2, \mathrm{K}\mathrm{L}=3 \mathrm{c}\mathrm{m}$, then the length of $\mathrm{A}\mathrm{B}$ is