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### Grade 5 - Mathematics7.3 Kinds of Triangles

 A three sided figure is called a triangle. When we connect three points with line segments, a triangle is formed. We can refer to the triangle as triangle ABC. The points A, B, C are called the vertices of the triangle, and the segments AB, BC, and AC are called the sides. A triangle that has two equal sides is called an isosceles triangle. A triangle that has three sides equal is called an equilateral triangle. A triangle that has one right angle is called a right angled triangle. A triangle that has one obtuse angle is called an obtuse angled triangle. A triangle that has one acute angle is called an acute angled triangle. Directions: Answer the following questions. Also draw a triangle and name its angle, vertices and sides.

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### Grade 5 - Mathematics7.3 Kinds of Triangles

 Q 1: What is the third angle of a right triangle with a 40 degree angle?50 degrees90 degrees180 degrees40 degrees Q 2: A triangle that has all three sides equal is called a (an)isosceles triangleright triangleequilateral triangleobtuse triangle Q 3: A triangle that has two equal sides is called a (an)isosceles triangleobtuse triangleequilateral triangle Q 4: A triangle that has three equal sides is called a (an) _______ triangle.equilateralcongruentisosceles Q 5: What shape is formed by the 10 pins in a bowling alley?SquareRhombusRectangleTriangle Q 6: A triangle is a geometric figure with ________ sides.fourthreetwofive Question 7: This question is available to subscribers only! Question 8: This question is available to subscribers only!