Grade 12 Angle Sums Worksheet
Explore and apply angle sum properties in various polygons and geometric figures at a Grade 12 level. Includes questions on triangles, quadrilaterals, and more complex polygons.
Includes
Standards
Topics
Grade 12 Angle Sums Worksheet
Name:
Date:
Score:
Read each question carefully and answer to the best of your ability. Show all your work for full credit. Diagrams are not necessarily drawn to scale.
1. What is the sum of the interior angles of a convex heptagon?
720°
900°
1080°
1260°
2. If the exterior angle of a regular polygon is 40°, how many sides does the polygon have?
8
9
10
12
3. The sum of the interior angles of a quadrilateral is .
4. Each interior angle of a regular hexagon measures degrees.
5. Consider a triangle ABC where angle A = (2x + 10)°, angle B = (3x - 5)°, and angle C = (x + 15)°. Find the measure of each angle.
6. A convex polygon has an interior angle sum of 1800°. How many sides does this polygon have? Explain your reasoning.
7. In the diagram below, find the value of x.
Related Worksheets
Grade 12 Math: Translations Worksheet
This worksheet focuses on understanding and applying translations in coordinate geometry for Grade 12 students.
Annulus Area Worksheet
Grade 12 Math worksheet on calculating the area of an annulus, including problems with different units and composite shapes.
Cavalieri's Principle Worksheet
Grade 12 Math worksheet on Cavalieri's Principle, exploring its application to calculate volumes of various solids.
Grade 12 Math: Triangular Prisms
This worksheet focuses on understanding and calculating properties of triangular prisms, including surface area and volume.
Slicing 3D Figures Worksheet
Explore the cross-sections of various three-dimensional figures with this Grade 12 Geometry worksheet.
Grade 12 Geometry: Parallel Line Proofs
Worksheet focusing on parallel line theorems and proofs, including alternate interior angles, corresponding angles, and consecutive interior angles.
Angle Pairs Worksheet
A Grade 12 math worksheet focusing on identifying and calculating various angle pairs, including complementary, supplementary, vertical, adjacent, corresponding, alternate interior, and alternate exterior angles.
Grade 12 Cartesian Coordinates Worksheet
A Grade 12 math worksheet focusing on advanced Cartesian coordinate concepts, including distance, midpoint, and geometric properties.