Grade 9 Geometry: Angle Sums

This worksheet covers fundamental concepts of angle sums, including angles on a straight line, angles around a point, and interior angles of polygons, suitable for Grade 9 geometry students.

Grade 9 Math GeometryAngle Sums

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Includes

Fill in the Blanks2 Short AnswerMultiple ChoiceTrue / False

Standards

CCSS.MATH.CONTENT.8.G.A.5CCSS.MATH.CONTENT.HSG.CO.C.10

Topics

MathGeometryAngle SumsGrade 9

7 sections · Free to use · Printable

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Grade 9 Geometry: Angle Sums

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Read each question carefully and answer to the best of your ability. Show all your work where applicable.

1. The sum of angles on a straight line is always equal to degrees.

2. Find the value of x in the diagram above. x =

3. What is the sum of angles around a central point?

4. Calculate the value of y in the diagram above.

5. What is the sum of the interior angles of a quadrilateral?

180°

360°

540°

720°

6. A regular hexagon has an interior angle sum of:

180°

360°

540°

720°

7. A triangle has angles measuring 45° and 65°. What is the measure of the third angle?

8. Find the value of z in the triangle shown above.

9. The sum of the exterior angles of any convex polygon is 360°.

True

False