Angles
Learn and practice identifying, drawing and, measuring different types of angles and become an expert in angles with interactive resources from GeoGebra.
Upper Elementary
GRADES 4-5
Adding and Subtracting Angles
Use addition and subtraction to find unknown measures of non-overlapping angles.
Angles
Identify and label the vertex, rays, and interior and exterior of an angle. Use appropriate naming conventions to identify angles.
Drawing and Measuring Angles with a Protractor
Draw and measure angles using a protractor. Understand that a circle measures 360 degrees.
Types of Angles
Identify and draw angles (acute, right, obtuse, and straight).
Middle School
GRADES 6-8
Angle Sum Properties of Triangles, Quadrilaterals, and Polygons
Use a variety of triangles, quadrilaterals, and other polygons to draw conclusions about the sum of the measures of the interior angles.
Complementary and Supplementary Angles
Define and identify complementary and supplementary angles.
Lines and Angles
Define and identify alternate interior, alternate exterior, corresponding, adjacent and vertical angles.
Pairs of Angles
Use properties, definitions, and theorems of angles and lines to solve problems related to adjacent, vertical, complementary, supplementary, and linear pairs of angles.
探索
GR. 6-8
Unknown Complementary Angles
練習
GR. 6-8
Finding Unknown Complementary Angles
探索
GR. 6-8
Unknown Supplementary Angles
練習
GR. 6-8
Finding Unknown Supplementary Angles
探索
GR. 6-8
Unknown Vertical Angles
練習
GR. 6-8
Finding Unknown Values in Vertical Angles
探索
GR. 6-8
Unknown Adjacent Angles
練習
GR. 6-8
Finding Unknown Values in Adjacent Angles
Using Theorems for Angles Formed by Parallel Lines
Use definitions and theorems of angles formed when a transversal intersects parallel lines.
High School
GRADES 9-12
Degree and Radian Measure of Angles
Determine the measure of an angle in degree mode or in radian mode.
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