 ## MAFS.4.MD.3.5: Recognize angles as geometric shapes that are formed wherever two rays share a common endpoint, and understand concepts of angle measurement: a. An angle is measured with reference to a circle with its center at the common endpoint of the rays, by considering the fraction of the circular arc between the points where the two rays intersect the circle. An angle that turns through 1/360 of a circle is called a “one-degree angle,” and can be used to measure angles. b. An angle that turns through n one-degree angles is said to have an angle measure of n degrees.

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Title Description Thumbnail Image Curriculum Topics

## Definition--Angle Concepts--Acute Angle

### Definition--Angle Concepts--Acute Angle This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

### Definition | Angle Concepts | Adjacent Angles This is a collection of definitions related to Angles. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

## Definition--Angle Concepts--Alternate Exterior Angles

### Definition--Angle Concepts--Alternate Exterior Angles This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

## Definition--Angle Concepts--Alternate Interior Angles

### Definition--Angle Concepts--Alternate Interior Angles This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

## Definition--Angle Concepts--Angle

### Definition--Angle Concepts--Angle This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

## Definition--Angle Concepts--Angle Bisector

### Definition--Angle Concepts--Angle Bisector This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

## Definition--Angle Concepts--Angle Measure

### Definition--Angle Concepts--Angle Measure This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

## Definition--Angle Concepts--Angle Vertex

### Definition--Angle Concepts--Angle Vertex This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

## Definition--Angle Concepts--Central Angle

### Definition--Angle Concepts--Central Angle This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

## Definition--Angle Concepts--Circumscribed Angle

### Definition--Angle Concepts--Circumscribed Angle This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

## Definition--Angle Concepts--Complementary Angle

### Definition--Angle Concepts--Complementary Angle This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

## Definition--Angle Concepts--Congruent Angles

### Definition--Angle Concepts--Congruent Angles This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

## Definition--Angle Concepts--Corresponding Angles

### Definition | Angle Concepts | Corresponding Angles This is a collection of definitions related to Angles. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

## Definition--Angle Concepts--Exterior Angle

### Definition--Angle Concepts--Exterior Angle This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

## Definition--Angle Concepts--Inscribed Angle

### Definition--Angle Concepts--Inscribed Angle This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

## Definition--Angle Concepts--Obtuse Angle

### Definition--Angle Concepts--Obtuse Angle This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

## Definition--Angle Concepts--Opposite Interior Angles

### Definition--Angle Concepts--Opposite Interior Angles This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

## Definition--Angle Concepts--Reflex Angle

### Definition--Angle Concepts--Reflex Angle This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

## Definition--Angle Concepts--Right Angle

### Definition--Angle Concepts--Right Angle This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

## Definition--Angle Concepts--Straight Angle

### Definition--Angle Concepts--Straight Angle This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

## Definition--Angle Concepts--Supplementary Angles

### Definition--Angle Concepts--Supplementary Angles This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

## Definition--Angle Concepts--Vertical Angles

### Definition--Angle Concepts--Vertical Angles This is a collection of definitions related to angles and related concepts. This includes general definitions for angles, angle measures, and angle properties, as well as specific angle types. Relationships among different types of angles are also defined. Definition of an Angle

## Math Clip Art--Angle Illustrations--Adjacent Angles--Labeled

### Math Clip Art--Angle Illustrations--Adjacent Angles--Labeled This is part of a collection of clip art images showing different types of angles. Each type of angle measure includes a labeled and unlabeled version. Angles and Applications of Angles and Planes

## Math Clip Art--Angle Illustrations--Adjacent Angles--Unlabeled

### Math Clip Art--Angle Illustrations--Adjacent Angles--Unlabeled This is part of a collection of clip art images showing different types of angles. Each type of angle measure includes a labeled and unlabeled version. Angles and Applications of Angles and Planes

## Math Clip Art--Angle Illustrations--Angle Bisector--Labeled

### Math Clip Art--Angle Illustrations--Angle Bisector--Labeled This is part of a collection of clip art images showing different types of angles. Each type of angle measure includes a labeled and unlabeled version. Angles and Applications of Angles and Planes