Question

draw an angle of 80degree.copy its supplementary angle and bisect it find the measure of the bisected parts of the angle

Answer 1

$\angle QPR$ supplementary angle of $80\ degree$ where $PU$ is the bisecting line.

Step-by-step explanation:

Given,

Draw an angle of $80\ degree$ and copy its supplementary angle.

Following steps:

• Draw any line segments $AB$ using scale.
• Take $A$ as center and draw an angle $80\ degree$ like $\angle BAC=80\ degree$using protector.

Supplementary angle of $80\ degree$ means,

$=(180-80)=100\ degree$

• Take any another line $PQ$ using scale.

• Where $P$ as center, draw an angle $100\ degree$ like $\angle QPR=100\ degree$ using protector.

• $P$ as center draw an arc which cuts the line $PR\ and\ PQ$ at $S\ and\ T$
• $S$ as center and any radius draw an arc
• Similarly $T$ as center and same radius draw an arc which cuts the before arc at $U$
• Join $PU$
• Using protector measure the bisecting parts.

Hence, $\angle QPR$ supplementary angle of $80\ degree$ where $PU$ is the bisecting line.