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TRANSCRIPT
02 SB Types of Triangles.notebook
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WED 2/5
1) WarmUp
2) Notes
ALL electronics should be put away in your BAG!
> Unit 2A Quiz 1 on FRIDAY
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1) and are complementary angles. If
m = 5x 9 and m = 10x 6. What are the measures of the two angles?
2) Solve for x.
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3) Solve for x.
4) The figure shows a triangle with one of its angle bisectors.
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What am I learning today?Learning Objective 2A.2
How to explain and use the characteristics of equilateral and isosceles triangles.
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What will I do to show that I have learned it?I can...Use congruent sides and angles in equilateral triangles and the base angle theorem in isosceles triangles.
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Equilateral Triangle A triangle with 3 congruent SIDES and ANGLES
EACH ANGLE MEASURE IS:
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1. If AB = 2x + 3 and AC = 3x 7, solve for x?
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2. If is an equilateral triangle, ZY = x + 7 and YX = 3x 9, what is the length of XZ?
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3. Solve for x and y.
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Isosceles Triangle A triangle with 2 congruent SIDES and ANGLESLegs The congruent SIDES of an isosceles triangle.
Base The noncongruent side of an isosceles triangle
Base Angles The congruent angles opposite of the LEGS
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Isosceles Triangle TheoremIf two sides of a triangle are congruent, then the angles opposite of the sides
are congruent.
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Converse Isosceles Triangle TheoremIf two angles of a triangle are congruent, then the sides opposite of the sides are
congruent.
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1. is an isosceles with legs AB and BC. If the m , what is the m ?
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2. Solve for m
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3. Solve for x.
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4) Solve for x
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5) Solve for x.
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6) Solve for x.
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Classwork:
Complete the classwork by using isosceles and equilateral characteristics.
HW: Finish the classwork
Actively working