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Classify the following triangles by sides as a scalene triangle, an isosceles Examples of three other triangle classifications are shown in the table. m∠QSR = 72° by Lin. LESSON Reteach 4-1 Classifying Triangles You can classify triangles by their angle measures. and U Sum Thm., m∠ TSV= 54°. of > segs. Reteach 1. 4. 33 7.

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Acute Triangle Right Triangle Obtuse Triangle all acute angles one right angle one obtuse angle If you get stuck on a problem, try looking at the Reteach worksheet at the same skill #, because it explains steps on how to solve a similar problem. Step 1 Find the value of x. QR = RS Def. Each pair of sides joins at a vertex. Reteach Classifying Triangles continued You can also classify triangles by their side lengths. (2, 5) 60.. The measure of one acute angle is 8 times the measure of the other acute angle.

3. Pair Thm. In this classifying triangles worksheet, students review the four different types of triangles. Reteach Congruent Triangles Triangles are congruent if they have the same size and shape. and by ∠ Add. 4247 Homework Help 30 8 130 8 20 8 . 3 c. 4 a. and U Sum Thm., m∠SQR = 36°.

4 c. 5 a.

72° 4. Classify Triangles: Reteach - Lesson Planet. 2. When three or more lines intersect at one point, the lines are said to be concurrent. 3. the area of the trapezoid 4. the height of the triangle in which A 5 192 cm 2 15 m 11 m 7 m 24 cm A 5 91 m 2 h 5 16 cm 5. the perimeter of a rectangle in which 6. b2 of a trapezoid in which A 5 5 ft 2, A 5 154 in 2 and h 5 11 in. h 5 2 ft, and b 1 5 1 ft P 5 50 in.

Topic 15 Introduction Video . 1 a. Obtuse triangle Right triangle Acute triangle 4x = 3x + 5 Substitution x = … Do not distribute on websites, books, or any such … x = 10 2. 15-1 Reteach. This Classify Triangles: Reteach Worksheet is suitable for 4th - 5th Grade. Examples of three other triangle classifications are shown in the table. Solve (3x + 6)° = 36°. Given: UXYZ ≅ UNPQ. 12 6. 47° 3. DPQR DQRP DRPQ DPRQ DQPR DRQP There are types of triangles. (Lesson 3.7) 59.

Math worksheets to print off if you lost yours or were absent. Permission to copy: You are free to copy this worksheet to any number of students for their mathematics work.

15-2 Reteach. at least two sides You can use triangle classification to find the side lengths of a triangle. An equiangular triangle, for example, is a triangle with three congruent angles. 5 b. 2 c. 3 a. Students then name the kind of triangle shown and write equilateral, isosceles, right, or scalene. (See Example 4.) To identify corresponding parts of congruent triangles, look at the order of the vertices in the congruence statement such as UABC ≅ UJKL. 24. step 1 step 2 Find the value of x. Acute Triangle Right Triangle Obtuse Triangle all acute angles one right angle one obtuse angle Topic 15 (w/ 16-5 4th, 17-1 6th, & 16-10 4th): Classifying Triangles & Quadrilaterals. 3 b. This Classify Triangles: Reteach Worksheet is suitable for 4th - 5th Grade. 4x = 3x + 5 Substitution x = 5 … Their corresponding parts, the angles and sides that are in the same positions, are congruent. Lesson 106 Triangles .

LESSON Reteach Date Class Scalene Triangle no sides congruent Classifying Triangles continued You can also classify triangles by their side lengths. 5 c. Copyright Homeschoolmath.net - www.HomeschoolMath.net/worksheets.

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