Embibe Experts Solutions for Chapter: Lines and Angles, Exercise 1: Exercise

In the figure below, $PQRS$ is a quadrilateral shaped land. $PQ\parallel TS$ and the measurement of some angles are given in the figure. 

What is the angle marked $y$ in degrees, in the figure above ? (Only numeral value is expected)

The figure below shows a structure made by a child in which $AE\parallel BD$. The child's elder brother, measured $\angle DBC,$ and $\angle BCA$ and found their measures are $28°$ and $80°$ respectively.

What is the measure of $\angle CAE$?

Gautham made this structure with a stick and challenged his brother to find the measure of angles in the figure below. 

What is the measure of angle $\angle ROQ$?

Two stright roads, $PR$, and $QS$ intersect at $O$ as shown in the figure below. From $O$ there another road leading towards $T$. The measure of $\angle POQ=50°$.

The measure of $\angle ROS$ is twice the measure of $\angle TOS$.

The measure of $\angle POT$ is _____ $°$

Shown below is a design of window. The $BH, CG$, and $DF$ are parallel to each other.  $AC\perp CE$

The measure of $\angle ABH$ is _____ $°$

The figure below $AB, AC$ and $CD$ are boundaries of a field. $AB\parallel CD$. The measure of $\angle DCE=108°$ and that of $\angle BAC=29°$

The measure of $\angle ACE$ is _____ $°$

In the figure below, $PQ$, and $RS$ are parallel railway tracks. A straight pole fell over a parallel railway track,as shown.

Of the following, which pair of angles are supplementary?

Four straws are arranged with their ends joined at $O$, as shown below. The measure $\angle POR$ is $110°$, $\angle QOS$is $90°$, $\angle POS$ is $140°$.

The measure of $\angle QOR$ is _____ $°$