Addition
347 + 125 =
472
864 − 321 =
543
4 x 4 =
16
An angle that measures exactly 90 degrees.
Right Angle
This 1787 meeting in Philadelphia created the U.S. Constitution.
The Constitutional Convention
568 + 274 =
842
748 − 216 =
532
12 x 4 =
48
An angle that measures less than 90 degrees.
Acute Angle
He is known as the “Father of the Constitution” for his central role in its drafting.
James Madison
789 + 468 =
1,257
402 − 185 =
217
15 x 3 =
45
An angle that measures more than 90 degrees but less than 180 degrees.
Obtuse Angle
He wrote many of the Federalist Papers and later became the first Secretary of the Treasury.
Alexander Hamilton
654 + 378 =
1,032
730 − 468 =
262
34 x 9 =
306
This polygon has four equal sides and four right angles.
A square
Many states ratified the Constitution only after the promise that these would be added to protect individual liberties.
Bill of Rights
895 + 247 =
1,142
914 − 587 =
327
23 x 5 =
115
An angle that measures exactly 180 degrees.
Straight Angle
He negotiated the Treaty of Paris in 1783, ending the Revolutionary War.
Benjamin Franklin