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71 resources with the concept congruent angles

10 Items in Collection
Lesson Planet

Grade 8, Claim 1: Concepts and Procedures Item Slide Shows

For Teachers 8th Standards
Ten resources make up a collection of student and teacher-friendly slides that prepare eighth graders for the Smarter Balance assessment. Learners review rational and irrational numbers, convert repeating decimals to fractions, as well...
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Constructing a Congruent Angle

For Students 9th - 12th Standards
Is your class confounded by congruency? Find out using a fast, fun formative assessment. Learners must construct a congruent angle using the proper tools, then explain their thought processes. The included rubric contains information to...
8:12
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SAT Prep: Test 7 Section 8 Part 2

For Students 9th - 12th
Continuing his SAT review session, Sal explores problems with slopes, linear equations, and congruent angles. He begins problem 10 (geometry) but finishes the problem in the next video.
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Accessible Shapes

For Teachers 6th - 8th Standards
All the 2-D and 3-D measurement work you need is in one location. Divided into three sections, the geometry lesson plans consist of visualization of three dimensions, classifying geometric figures, and finding surface area and volume....
1 In 1 Collection
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Smarter Balanced Sample Items: 8th Grade Math – Target G

For Teachers 8th Standards
Transform the thinking of transformations with six sample items that illustrate the first four standards in the eighth grade geometry domain. Items use the coordinate plane to transform figures and analyze the relationship of the figures...
2:22
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Human Tree: Dilations

For Students 6th - 8th Standards
Look at dilations exponentially. Using a fractal from a museum exhibit, the installment from the Math at the Core: Ratios series introduces the term dilation. The presenter points out that dilations can make images either smaller or...
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What's Your Angle?

For Teachers 9th - 11th Standards
Explore angle relationships with a hands-on activity. Young mathematicians begin by drawing parallel lines cut by a transversal and measuring the angle pairs. After establishing the angle pairs, individuals show their understanding by...
2:39
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The Third Angle Theorem: Lesson

For Students 8th - 11th Standards
If two sets of angles are equal, the third set is too. An informative portion of a playlist on geometry develops the Third Angle Theorem for triangles. Using the theorem, the presenter shows how to determine the measure of missing angles...
3:21
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Congruent Angles and Bisectors: Lesson

For Students 9th - 12th Standards
How is congruence shown? Using angles, the resource introduces the congruence symbol and explains the meaning of being congruent. A segment of a larger playlist on basic geometry discusses bisection as a way to arrive at two congruent...
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Engineering Design Challenge: Exploring Structures in High School Geometry

For Teachers 9th - 12th Standards
Applying their knowledge of theorems about lines, angles, and triangles, groups build a toothpick and stick bridge to support their text book. The teams use the design process to plan, build, test, and refine their bridge designs. The...
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The Consequences of Similarity

For Students 9th - 12th Standards
Examine similarity through a lens of transformations. A creative question asks learners to explain the properties of the angles and sides of similar figures. They must use the definition of transformations to build their explanations.
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Conjectures and Proof

For Students 9th - 12th Standards
Transform proofs using triangle rotations. By rotating a triangle around various points, class members develop proofs. Participants prove relationships of alternative interior angles formed by parallel lines and the sum of the interior...
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Proving Congruence Using Corresponding Parts

For Students 9th - 12th Standards
Translate, reflect, and rotate one triangle onto another. Given two triangles with corresponding parts, individuals use properties of rigid transformations to show the two triangles are congruent. Pupils show that after a series of...
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Prove the AA Similarity Theorem

For Students 9th - 12th Standards
Transform a diagram into a proof. Given two triangles on a coordinate plane, pupils develop a proof to show they are similar. The learners use the fact that two angles of one triangle are congruent to two angles of another and their...
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Properties of Congruence: Congruent Figures

For Students 9th - 11th Standards
No two resources are exactly the same, but polygons can be. Scholars match congruent figures by dragging them together in an interactive. They answer some challenge questions that justify their matches.
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Properties of Congruence: Polygon Party

For Students 9th - 11th Standards
Don't let congruent figures drag you down. Young mathematicians use an interactive to drag figures onto one another to determine if the figures are congruent.
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Proving the Alternate Interior Angles Theorem

For Students 9th - 12th Standards
Proofs not included; you must write them on you own. Learners write a proof that alternate interior angles are congruent. The proof must rely on rigid motions.
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Proving Parallelogram Angle Congruence

For Students 9th - 12th Standards
Opposite angles in a parallelogram aren't opposites, so what are they? Scholars prove that opposite angles of a parallelogram are congruent. A two-column proof might be appropriate here.
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Isosceles Triangle Proof

For Students 9th - 12th Standards
Isosceles means two sides are congruent. Given an isosceles triangles, pupils develop a geometric proof showing that the two base angles are congruent. 
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Congruent Angles and Angle Bisectors: Bisecting Pepperoni Pizza

For Students 9th - 12th Standards
Who doesn't like pizza?  A creative lesson uses a piece of pizza to explore angle bisectors and congruent angles. Young scholars work through a simulation to create congruent slices of pizza by analyzing an angle bisector. They then...
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Finding Angle Measures 1

For Students 9th - 12th Standards
How does your class measure up to finding angle measurements? Young scholars of geometry find the measurements of four missing angles on three concurrent lines. After finding each measurement, they must then justify their answers. Use...
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Finding Angle Measures 2

For Students 9th - 12th Standards
Can your pupils determine the measurement of seven angles from the measurement of just one? Geometry enthusiasts tackle this task in a problem involving parallel lines with a transversal. After finding the correct measurements, the class...
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Finding Angle C

For Students 9th - 12th Standards
Are pupils prepared for the perfect parallelogram problem? Let them put their skills to the test using a formative assessment that's short and focused. Geometry scholars sketch a parallelogram and find the measure of an angle, then...
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Congruent Triangles

For Teachers 9th - 11th Standards
Is this enough to show the two triangles are congruent? Small groups work through different combinations of constructing triangles from congruent parts to determine which combinations create only congruent triangles. Participants use the...