Subject Experts Solutions for Chapter: Geometry, Exercise 1: Exercise 1

The circumference of a circle is $220 cm$. Find the perimeter of its quadrant.

Draw an acute angle $\mathrm{POQ}$ and draw its line symmetry.

Write all the letters of the English alphabet which have exactly two lines of symmetry and draw their lines of symmetry.

Identify the following pairs of angles as complementary and supplementary.

$45° \mathrm{and} 135°$

Identify the following pairs of angles as complementary and supplementary.

$60° \mathrm{and} 10°$

Identify the following pairs of angles as complementary and supplementary.

$80° \mathrm{and} 10°$

In the figure $\overline{\mathrm{PA}}\parallel \overline{\mathrm{QB}}$. If $\mathrm{AT}$ and $\mathrm{BS}$ intersect at $\text{'}\mathrm{C}\text{'}$, find the measure of $\angle \mathrm{TCS}$. (in $°$).

In the figure, $\mathrm{ABD}, \mathrm{BCD}$ are two triangles. $\mathrm{BD}$ is the bisector of $\angle \mathrm{ABC} \mathrm{and} \angle \mathrm{ADC}$. If $\angle \mathrm{BCD}=40°,$ then find the measure of $\angle \mathrm{BAD}$ (in $°$).