Question

Which of the following option is correct for $\angle ABC$ and $\angle DEF?$

• A. $\angle ABC=\angle DEF$
• B. $\angle ABC>\angle DEF$
• C. $\angle ABC<\angle DEF$
• D. Cannot be determined

Answer 1

The correct option is B $\angle ABC>\angle DEF$

An angle’s measure is the number of 1-degree angles it rotates through. Each tick mark is 1 degree.
Here arm BC coincides with the right edge of protractor, so we're gonna read inside numbers of the protractor.

In this angle, one arm passes through $0^{\circ }$ and the other arm passes through ${40}^{\circ }$ degrees.
$\therefore$The angle $\angle ABC$ measures ${40}^{\circ }.$


Here arm ED coincides with the left edge of protractor, so we're gonna read outside numbers of the protractor.

In this angle, one arm passes through $0^{\circ }$ and the other arm passes through ${25}^{\circ }$ degrees.
$\therefore$The angle $\angle DEF$ measures ${25}^{\circ }.$

$\therefore \angle ABC>\angle DEF$