Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Classroom

Outline

  1. Adding the Angles in a Triangle: IM 8.1.15
    1. Lesson 8.1.15
    2. Practice 8.1.15

    Adding the Angles in a Triangle: IM 8.1.15

    Author:GeoGebra Classroom Activities
    Topic:Angles, Geometry, Triangles
    “Adding the Angles in a Triangle” from IM Grade 8 by Open Up Resources and Illustrative Mathematics. Licensed under the Creative Commons Attribution 4.0 license.
    Adding the Angles in a Triangle: IM 8.1.15

    Table of Contents

    • Lesson 8.1.15

      • IM 8.1.15 Lesson: Adding the Angles in a Triangle
    • Practice 8.1.15

      • IM 8.1.15 Practice: Adding the Angles in a Triangle
    Next
    IM 8.1.15 Lesson: Adding the Angles in a Triangle

    New Resources

    • Linear Equation Graphs: Thin Slice
    • Congruent Sides & Angles in △s: Exploration
    • Pythagorean Theorem: Quick Illustrator
    • Pythagorean Template: Integer Legs
    • What Do You See? (2)

    Discover Resources

    • The Nine-Point Center
    • Logarithmic and Exponential Functions
    • Modul4_KASIATI_SMP ISLAM MA'ARIF 02 KOTA MALANG
    • The function, its graph and its table of variations
    • Separate your filters! Separability, SVD and low-rank approximation of 2D image processing filters (Bart Wronski)

    Discover Topics

    • Equilateral Triangles
    • Vectors 2D (Two-Dimensional)
    • Constructions
    • Differential Equation
    • Logarithm
    AboutPartnersHelp Center
    Terms of ServicePrivacyLicense
    Graphing CalculatorCalculator SuiteMath Resources

    Download our apps here:

    Download_on_the_App_Store_Badge_US-UK_RGB_blk_4SVG_092917

    © 2026 GeoGebra®