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8
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a line, segment, or a ray that passes through the midpoint of the side and is also perpendicular to that side
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11
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Sum of the lengths of any two sides of a triangle is greater than the length of the third side
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12
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the largest angle in a triangle is opposite the
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13
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circumcenter of a triangle is equdisitant from the vertices of the triangle
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15
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the incenter of a triangle is equidistant from each side of the triangle
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16
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three or more lines intersect at a common point
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17
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is opposite the shortest side
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18
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the lines point of intersection is called this
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19
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centroid of a triangle is located two thirds of the distance from a vertex to the midpoint of the side opposite the vertex on a median is called this
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20
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in two triangles, if two sides are congruent then the measure of the included angle determines which triangle has longer third side is called
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21
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assuming that the conclusion is false, and then showing other accepted facts
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22
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in two triangles, if two sides are congruent then the length of the third side determines which triangle has the included angle with the greater measure
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1
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intersection point of the altitudes of a triangle
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2
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a segment from vertex to the line containing the opposite side and perpendicular to the ling containing that side and every triangle has three of these
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3
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the angle bisectors of a triangle are congruent, and their point of concurrency is called this
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4
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the perpendicular segment from a point to a plane is the BLANK segment from the point to the plane
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5
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sum of two lengths of any two sides of a triangle is BLANK than the length of the length of the third side
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6
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in an indirect proof, the conclusion is assumed BLANK, and a contradiction is reached
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7
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the assumption has been proven false, so the original conclusion must be true, a proof of this type is known as
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9
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is an angle is an exterior of a triangle, then it measure is greater than the measure of either of its corresponding remote interior angles is called
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10
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the point of balance for any triangle
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14
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a segment whose endpoints are a vertex of a triangle and the midpoint of the side opposite the vertex and every triangle has this
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