Choose the best answer. 1. Use geometry notation to identify a line in the figure below. A AD В АС 4. Is ZGFH an acute, right, obtuse, or straight angle? A acute B obtuse C right D straight C DC D AB 5. Name a pair of supplementary angles. A ZDFE and ZEFK B ZGFJ and LEFH C LDFK and ZHFK D LEFK and ZHFK A B Use the figure below for 6–8. 2. Which two line segments are congruent? C D B 20° A B 50° E A E 6. Which statement is NOT true? A AB and AE B ABand BC C BC and ED D BD and AE A LAFG and ZDFE are vertical angles. B ZBFD and ZAFB are adjacent angles. Use the figure below for 3-5. C LDFE and LDFC are complementary. D LEFD and LAFG are supplementary. H K F/40° 60° D G 7 What is the measure of / AFG?

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Percentage

A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.

Algebraic Expressions

In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.

Numbers

Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.

Subtraction

Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.

Addition

Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.