Home / Worksheets / Grade 9 / Math / Finding Missing Sides - Grade 9 Geometry

Finding Missing Sides - Grade 9 Geometry

A Grade 9 math worksheet focusing on finding missing sides in right-angled triangles using the Pythagorean theorem and basic trigonometry.

Grade 9 Math GeometryFinding Missing Sides
Use This Worksheet

Includes

3 Short Answer

Standards

CCSS.MATH.CONTENT.8.G.B.7CCSS.MATH.CONTENT.HSG.SRT.C.8

Topics

GeometryPythagorean TheoremTrigonometryRight TrianglesGrade 9 Math
5 sections · Free to use · Printable
← More Math worksheets for Grade 9

Finding Missing Sides - Grade 9 Geometry

Name:

Date:

Score:

Read each question carefully and follow the instructions. Show all your work for full credit. Round your answers to two decimal places where necessary.

Use the Pythagorean theorem to find the missing side in each right-angled triangle.

8 cm6 cmx

1. Find x.

12 mx13 m

2. Find x.

Use trigonometry (Sine, Cosine, or Tangent) to find the missing side. Round your answers to two decimal places.

x10 cm30°

3. Find x.

15 cmx60°

4. Find x.

20 cmx45°

5. Find x.

Solve the following word problems. Draw a diagram for each problem to help you visualize the situation.

6. A ladder 15 feet long is leaning against a wall. The base of the ladder is 9 feet from the wall. How high up the wall does the ladder reach?

7. A kite is flying at an angle of elevation of 40 degrees. The string is 75 meters long. How high is the kite above the ground?