Notes 1 – Section 7.1



Students will understand and be able to solve problems involving proportions and similar figures.



Ratio – a comparison of two quantities using division. Ratios are expressed in simplest form. 45:15

The number of students that participate in sports programs at RV is 520. The total number of students in the school is 1850. Find the athlete-to-student ratio to the nearest tenth.

The ratio of the measures of the angles in ABC is 5:12:13. Find the measures of the angles.

a c If when b ≠ 0 and d ≠ 0, then ad = bc. = b d

Solve the proportion.

20 4 x = 5 6

Solve the proportion.

x − 3 15 = 5 3

The ratio of the measure of the sides of a triangle is 4:6:8 and its perimeter is 126 feet. Find the lengths of the sides.

Pages 460 – 461: 10, 12, 14, 17 – 29 odd, 35 – 39 odd Signed Syllabus Slip Syllabus Scavenger Hunt Math’s Mates – Bring book on Friday

Notes 1 - Ratios and Proportions.pdf

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